JAVA RPC Thrift基操实现与微服务间调用

一、Thrift 基操实现

1.1 thrift文件

namespace java com.zn.opit.thrift.helloworld

service HelloWorldService {
    string sayHello(1:string username)
}

1.2 执行命令生成Java文件

thrift -r --gen java helloworld.thrift

生成代码HelloWorldService接口如下

/**
 * Autogenerated by Thrift Compiler (0.11.0)
 *
 * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
 *  @generated
 */
package com.zn.opit.thrift.helloworld;

@SuppressWarnings({"cast", "rawtypes", "serial", "unchecked", "unused"})
@javax.annotation.Generated(value = "Autogenerated by Thrift Compiler (0.11.0)", date = "2023-10-29")
public class HelloWorldService {

  public interface Iface {

    public java.lang.String sayHello(java.lang.String username) throws org.apache.thrift.TException;

  }

  public interface AsyncIface {

    public void sayHello(java.lang.String username, org.apache.thrift.async.AsyncMethodCallback<java.lang.String> resultHandler) throws org.apache.thrift.TException;

  }

  public static class Client extends org.apache.thrift.TServiceClient implements Iface {
    public static class Factory implements org.apache.thrift.TServiceClientFactory<Client> {
      public Factory() {}
      public Client getClient(org.apache.thrift.protocol.TProtocol prot) {
        return new Client(prot);
      }
      public Client getClient(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
        return new Client(iprot, oprot);
      }
    }

    public Client(org.apache.thrift.protocol.TProtocol prot)
    {
      super(prot, prot);
    }

    public Client(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
      super(iprot, oprot);
    }

    public java.lang.String sayHello(java.lang.String username) throws org.apache.thrift.TException
    {
      send_sayHello(username);
      return recv_sayHello();
    }

    public void send_sayHello(java.lang.String username) throws org.apache.thrift.TException
    {
      sayHello_args args = new sayHello_args();
      args.setUsername(username);
      sendBase("sayHello", args);
    }

    public java.lang.String recv_sayHello() throws org.apache.thrift.TException
    {
      sayHello_result result = new sayHello_result();
      receiveBase(result, "sayHello");
      if (result.isSetSuccess()) {
        return result.success;
      }
      throw new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.MISSING_RESULT, "sayHello failed: unknown result");
    }

  }
  public static class AsyncClient extends org.apache.thrift.async.TAsyncClient implements AsyncIface {
    public static class Factory implements org.apache.thrift.async.TAsyncClientFactory<AsyncClient> {
      private org.apache.thrift.async.TAsyncClientManager clientManager;
      private org.apache.thrift.protocol.TProtocolFactory protocolFactory;
      public Factory(org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.protocol.TProtocolFactory protocolFactory) {
        this.clientManager = clientManager;
        this.protocolFactory = protocolFactory;
      }
      public AsyncClient getAsyncClient(org.apache.thrift.transport.TNonblockingTransport transport) {
        return new AsyncClient(protocolFactory, clientManager, transport);
      }
    }

    public AsyncClient(org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.transport.TNonblockingTransport transport) {
      super(protocolFactory, clientManager, transport);
    }

    public void sayHello(java.lang.String username, org.apache.thrift.async.AsyncMethodCallback<java.lang.String> resultHandler) throws org.apache.thrift.TException {
      checkReady();
      sayHello_call method_call = new sayHello_call(username, resultHandler, this, ___protocolFactory, ___transport);
      this.___currentMethod = method_call;
      ___manager.call(method_call);
    }

    public static class sayHello_call extends org.apache.thrift.async.TAsyncMethodCall<java.lang.String> {
      private java.lang.String username;
      public sayHello_call(java.lang.String username, org.apache.thrift.async.AsyncMethodCallback<java.lang.String> resultHandler, org.apache.thrift.async.TAsyncClient client, org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.transport.TNonblockingTransport transport) throws org.apache.thrift.TException {
        super(client, protocolFactory, transport, resultHandler, false);
        this.username = username;
      }

      public void write_args(org.apache.thrift.protocol.TProtocol prot) throws org.apache.thrift.TException {
        prot.writeMessageBegin(new org.apache.thrift.protocol.TMessage("sayHello", org.apache.thrift.protocol.TMessageType.CALL, 0));
        sayHello_args args = new sayHello_args();
        args.setUsername(username);
        args.write(prot);
        prot.writeMessageEnd();
      }

      public java.lang.String getResult() throws org.apache.thrift.TException {
        if (getState() != org.apache.thrift.async.TAsyncMethodCall.State.RESPONSE_READ) {
          throw new java.lang.IllegalStateException("Method call not finished!");
        }
        org.apache.thrift.transport.TMemoryInputTransport memoryTransport = new org.apache.thrift.transport.TMemoryInputTransport(getFrameBuffer().array());
        org.apache.thrift.protocol.TProtocol prot = client.getProtocolFactory().getProtocol(memoryTransport);
        return (new Client(prot)).recv_sayHello();
      }
    }

  }

  public static class Processor<I extends Iface> extends org.apache.thrift.TBaseProcessor<I> implements org.apache.thrift.TProcessor {
    private static final org.slf4j.Logger _LOGGER = org.slf4j.LoggerFactory.getLogger(Processor.class.getName());
    public Processor(I iface) {
      super(iface, getProcessMap(new java.util.HashMap<java.lang.String, org.apache.thrift.ProcessFunction<I, ? extends org.apache.thrift.TBase>>()));
    }

    protected Processor(I iface, java.util.Map<java.lang.String, org.apache.thrift.ProcessFunction<I, ? extends org.apache.thrift.TBase>> processMap) {
      super(iface, getProcessMap(processMap));
    }

    private static <I extends Iface> java.util.Map<java.lang.String,  org.apache.thrift.ProcessFunction<I, ? extends org.apache.thrift.TBase>> getProcessMap(java.util.Map<java.lang.String, org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
      processMap.put("sayHello", new sayHello());
      return processMap;
    }

    public static class sayHello<I extends Iface> extends org.apache.thrift.ProcessFunction<I, sayHello_args> {
      public sayHello() {
        super("sayHello");
      }

      public sayHello_args getEmptyArgsInstance() {
        return new sayHello_args();
      }

      protected boolean isOneway() {
        return false;
      }

      @Override
      protected boolean handleRuntimeExceptions() {
        return false;
      }

      public sayHello_result getResult(I iface, sayHello_args args) throws org.apache.thrift.TException {
        sayHello_result result = new sayHello_result();
        result.success = iface.sayHello(args.username);
        return result;
      }
    }

  }

  public static class AsyncProcessor<I extends AsyncIface> extends org.apache.thrift.TBaseAsyncProcessor<I> {
    private static final org.slf4j.Logger _LOGGER = org.slf4j.LoggerFactory.getLogger(AsyncProcessor.class.getName());
    public AsyncProcessor(I iface) {
      super(iface, getProcessMap(new java.util.HashMap<java.lang.String, org.apache.thrift.AsyncProcessFunction<I, ? extends org.apache.thrift.TBase, ?>>()));
    }

    protected AsyncProcessor(I iface, java.util.Map<java.lang.String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase, ?>> processMap) {
      super(iface, getProcessMap(processMap));
    }

    private static <I extends AsyncIface> java.util.Map<java.lang.String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase,?>> getProcessMap(java.util.Map<java.lang.String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase, ?>> processMap) {
      processMap.put("sayHello", new sayHello());
      return processMap;
    }

    public static class sayHello<I extends AsyncIface> extends org.apache.thrift.AsyncProcessFunction<I, sayHello_args, java.lang.String> {
      public sayHello() {
        super("sayHello");
      }

      public sayHello_args getEmptyArgsInstance() {
        return new sayHello_args();
      }

      public org.apache.thrift.async.AsyncMethodCallback<java.lang.String> getResultHandler(final org.apache.thrift.server.AbstractNonblockingServer.AsyncFrameBuffer fb, final int seqid) {
        final org.apache.thrift.AsyncProcessFunction fcall = this;
        return new org.apache.thrift.async.AsyncMethodCallback<java.lang.String>() { 
          public void onComplete(java.lang.String o) {
            sayHello_result result = new sayHello_result();
            result.success = o;
            try {
              fcall.sendResponse(fb, result, org.apache.thrift.protocol.TMessageType.REPLY,seqid);
            } catch (org.apache.thrift.transport.TTransportException e) {
              _LOGGER.error("TTransportException writing to internal frame buffer", e);
              fb.close();
            } catch (java.lang.Exception e) {
              _LOGGER.error("Exception writing to internal frame buffer", e);
              onError(e);
            }
          }
          public void onError(java.lang.Exception e) {
            byte msgType = org.apache.thrift.protocol.TMessageType.REPLY;
            org.apache.thrift.TSerializable msg;
            sayHello_result result = new sayHello_result();
            if (e instanceof org.apache.thrift.transport.TTransportException) {
              _LOGGER.error("TTransportException inside handler", e);
              fb.close();
              return;
            } else if (e instanceof org.apache.thrift.TApplicationException) {
              _LOGGER.error("TApplicationException inside handler", e);
              msgType = org.apache.thrift.protocol.TMessageType.EXCEPTION;
              msg = (org.apache.thrift.TApplicationException)e;
            } else {
              _LOGGER.error("Exception inside handler", e);
              msgType = org.apache.thrift.protocol.TMessageType.EXCEPTION;
              msg = new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.INTERNAL_ERROR, e.getMessage());
            }
            try {
              fcall.sendResponse(fb,msg,msgType,seqid);
            } catch (java.lang.Exception ex) {
              _LOGGER.error("Exception writing to internal frame buffer", ex);
              fb.close();
            }
          }
        };
      }

      protected boolean isOneway() {
        return false;
      }

      public void start(I iface, sayHello_args args, org.apache.thrift.async.AsyncMethodCallback<java.lang.String> resultHandler) throws org.apache.thrift.TException {
        iface.sayHello(args.username,resultHandler);
      }
    }

  }

  public static class sayHello_args implements org.apache.thrift.TBase<sayHello_args, sayHello_args._Fields>, java.io.Serializable, Cloneable, Comparable<sayHello_args>   {
    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("sayHello_args");

    private static final org.apache.thrift.protocol.TField USERNAME_FIELD_DESC = new org.apache.thrift.protocol.TField("username", org.apache.thrift.protocol.TType.STRING, (short)1);

    private static final org.apache.thrift.scheme.SchemeFactory STANDARD_SCHEME_FACTORY = new sayHello_argsStandardSchemeFactory();
    private static final org.apache.thrift.scheme.SchemeFactory TUPLE_SCHEME_FACTORY = new sayHello_argsTupleSchemeFactory();

    public java.lang.String username; // required

    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
      USERNAME((short)1, "username");

      private static final java.util.Map<java.lang.String, _Fields> byName = new java.util.HashMap<java.lang.String, _Fields>();

      static {
        for (_Fields field : java.util.EnumSet.allOf(_Fields.class)) {
          byName.put(field.getFieldName(), field);
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, or null if its not found.
       */
      public static _Fields findByThriftId(int fieldId) {
        switch(fieldId) {
          case 1: // USERNAME
            return USERNAME;
          default:
            return null;
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, throwing an exception
       * if it is not found.
       */
      public static _Fields findByThriftIdOrThrow(int fieldId) {
        _Fields fields = findByThriftId(fieldId);
        if (fields == null) throw new java.lang.IllegalArgumentException("Field " + fieldId + " doesn't exist!");
        return fields;
      }

      /**
       * Find the _Fields constant that matches name, or null if its not found.
       */
      public static _Fields findByName(java.lang.String name) {
        return byName.get(name);
      }

      private final short _thriftId;
      private final java.lang.String _fieldName;

      _Fields(short thriftId, java.lang.String fieldName) {
        _thriftId = thriftId;
        _fieldName = fieldName;
      }

      public short getThriftFieldId() {
        return _thriftId;
      }

      public java.lang.String getFieldName() {
        return _fieldName;
      }
    }

    // isset id assignments
    public static final java.util.Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
    static {
      java.util.Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new java.util.EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
      tmpMap.put(_Fields.USERNAME, new org.apache.thrift.meta_data.FieldMetaData("username", org.apache.thrift.TFieldRequirementType.DEFAULT, 
          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
      metaDataMap = java.util.Collections.unmodifiableMap(tmpMap);
      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(sayHello_args.class, metaDataMap);
    }

    public sayHello_args() {
    }

    public sayHello_args(
      java.lang.String username)
    {
      this();
      this.username = username;
    }

    /**
     * Performs a deep copy on other.
     */
    public sayHello_args(sayHello_args other) {
      if (other.isSetUsername()) {
        this.username = other.username;
      }
    }

    public sayHello_args deepCopy() {
      return new sayHello_args(this);
    }

    @Override
    public void clear() {
      this.username = null;
    }

    public java.lang.String getUsername() {
      return this.username;
    }

    public sayHello_args setUsername(java.lang.String username) {
      this.username = username;
      return this;
    }

    public void unsetUsername() {
      this.username = null;
    }

    /** Returns true if field username is set (has been assigned a value) and false otherwise */
    public boolean isSetUsername() {
      return this.username != null;
    }

    public void setUsernameIsSet(boolean value) {
      if (!value) {
        this.username = null;
      }
    }

    public void setFieldValue(_Fields field, java.lang.Object value) {
      switch (field) {
      case USERNAME:
        if (value == null) {
          unsetUsername();
        } else {
          setUsername((java.lang.String)value);
        }
        break;

      }
    }

    public java.lang.Object getFieldValue(_Fields field) {
      switch (field) {
      case USERNAME:
        return getUsername();

      }
      throw new java.lang.IllegalStateException();
    }

    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
    public boolean isSet(_Fields field) {
      if (field == null) {
        throw new java.lang.IllegalArgumentException();
      }

      switch (field) {
      case USERNAME:
        return isSetUsername();
      }
      throw new java.lang.IllegalStateException();
    }

    @Override
    public boolean equals(java.lang.Object that) {
      if (that == null)
        return false;
      if (that instanceof sayHello_args)
        return this.equals((sayHello_args)that);
      return false;
    }

    public boolean equals(sayHello_args that) {
      if (that == null)
        return false;
      if (this == that)
        return true;

      boolean this_present_username = true && this.isSetUsername();
      boolean that_present_username = true && that.isSetUsername();
      if (this_present_username || that_present_username) {
        if (!(this_present_username && that_present_username))
          return false;
        if (!this.username.equals(that.username))
          return false;
      }

      return true;
    }

    @Override
    public int hashCode() {
      int hashCode = 1;

      hashCode = hashCode * 8191 + ((isSetUsername()) ? 131071 : 524287);
      if (isSetUsername())
        hashCode = hashCode * 8191 + username.hashCode();

      return hashCode;
    }

    @Override
    public int compareTo(sayHello_args other) {
      if (!getClass().equals(other.getClass())) {
        return getClass().getName().compareTo(other.getClass().getName());
      }

      int lastComparison = 0;

      lastComparison = java.lang.Boolean.valueOf(isSetUsername()).compareTo(other.isSetUsername());
      if (lastComparison != 0) {
        return lastComparison;
      }
      if (isSetUsername()) {
        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.username, other.username);
        if (lastComparison != 0) {
          return lastComparison;
        }
      }
      return 0;
    }

    public _Fields fieldForId(int fieldId) {
      return _Fields.findByThriftId(fieldId);
    }

    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
      scheme(iprot).read(iprot, this);
    }

    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
      scheme(oprot).write(oprot, this);
    }

    @Override
    public java.lang.String toString() {
      java.lang.StringBuilder sb = new java.lang.StringBuilder("sayHello_args(");
      boolean first = true;

      sb.append("username:");
      if (this.username == null) {
        sb.append("null");
      } else {
        sb.append(this.username);
      }
      first = false;
      sb.append(")");
      return sb.toString();
    }

    public void validate() throws org.apache.thrift.TException {
      // check for required fields
      // check for sub-struct validity
    }

    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
      try {
        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, java.lang.ClassNotFoundException {
      try {
        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private static class sayHello_argsStandardSchemeFactory implements org.apache.thrift.scheme.SchemeFactory {
      public sayHello_argsStandardScheme getScheme() {
        return new sayHello_argsStandardScheme();
      }
    }

    private static class sayHello_argsStandardScheme extends org.apache.thrift.scheme.StandardScheme<sayHello_args> {

      public void read(org.apache.thrift.protocol.TProtocol iprot, sayHello_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
            break;
          }
          switch (schemeField.id) {
            case 1: // USERNAME
              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
                struct.username = iprot.readString();
                struct.setUsernameIsSet(true);
              } else { 
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }

      public void write(org.apache.thrift.protocol.TProtocol oprot, sayHello_args struct) throws org.apache.thrift.TException {
        struct.validate();

        oprot.writeStructBegin(STRUCT_DESC);
        if (struct.username != null) {
          oprot.writeFieldBegin(USERNAME_FIELD_DESC);
          oprot.writeString(struct.username);
          oprot.writeFieldEnd();
        }
        oprot.writeFieldStop();
        oprot.writeStructEnd();
      }

    }

    private static class sayHello_argsTupleSchemeFactory implements org.apache.thrift.scheme.SchemeFactory {
      public sayHello_argsTupleScheme getScheme() {
        return new sayHello_argsTupleScheme();
      }
    }

    private static class sayHello_argsTupleScheme extends org.apache.thrift.scheme.TupleScheme<sayHello_args> {

      @Override
      public void write(org.apache.thrift.protocol.TProtocol prot, sayHello_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol oprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        java.util.BitSet optionals = new java.util.BitSet();
        if (struct.isSetUsername()) {
          optionals.set(0);
        }
        oprot.writeBitSet(optionals, 1);
        if (struct.isSetUsername()) {
          oprot.writeString(struct.username);
        }
      }

      @Override
      public void read(org.apache.thrift.protocol.TProtocol prot, sayHello_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol iprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        java.util.BitSet incoming = iprot.readBitSet(1);
        if (incoming.get(0)) {
          struct.username = iprot.readString();
          struct.setUsernameIsSet(true);
        }
      }
    }

    private static <S extends org.apache.thrift.scheme.IScheme> S scheme(org.apache.thrift.protocol.TProtocol proto) {
      return (org.apache.thrift.scheme.StandardScheme.class.equals(proto.getScheme()) ? STANDARD_SCHEME_FACTORY : TUPLE_SCHEME_FACTORY).getScheme();
    }
  }

  public static class sayHello_result implements org.apache.thrift.TBase<sayHello_result, sayHello_result._Fields>, java.io.Serializable, Cloneable, Comparable<sayHello_result>   {
    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("sayHello_result");

    private static final org.apache.thrift.protocol.TField SUCCESS_FIELD_DESC = new org.apache.thrift.protocol.TField("success", org.apache.thrift.protocol.TType.STRING, (short)0);

    private static final org.apache.thrift.scheme.SchemeFactory STANDARD_SCHEME_FACTORY = new sayHello_resultStandardSchemeFactory();
    private static final org.apache.thrift.scheme.SchemeFactory TUPLE_SCHEME_FACTORY = new sayHello_resultTupleSchemeFactory();

    public java.lang.String success; // required

    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
      SUCCESS((short)0, "success");

      private static final java.util.Map<java.lang.String, _Fields> byName = new java.util.HashMap<java.lang.String, _Fields>();

      static {
        for (_Fields field : java.util.EnumSet.allOf(_Fields.class)) {
          byName.put(field.getFieldName(), field);
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, or null if its not found.
       */
      public static _Fields findByThriftId(int fieldId) {
        switch(fieldId) {
          case 0: // SUCCESS
            return SUCCESS;
          default:
            return null;
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, throwing an exception
       * if it is not found.
       */
      public static _Fields findByThriftIdOrThrow(int fieldId) {
        _Fields fields = findByThriftId(fieldId);
        if (fields == null) throw new java.lang.IllegalArgumentException("Field " + fieldId + " doesn't exist!");
        return fields;
      }

      /**
       * Find the _Fields constant that matches name, or null if its not found.
       */
      public static _Fields findByName(java.lang.String name) {
        return byName.get(name);
      }

      private final short _thriftId;
      private final java.lang.String _fieldName;

      _Fields(short thriftId, java.lang.String fieldName) {
        _thriftId = thriftId;
        _fieldName = fieldName;
      }

      public short getThriftFieldId() {
        return _thriftId;
      }

      public java.lang.String getFieldName() {
        return _fieldName;
      }
    }

    // isset id assignments
    public static final java.util.Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
    static {
      java.util.Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new java.util.EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
      tmpMap.put(_Fields.SUCCESS, new org.apache.thrift.meta_data.FieldMetaData("success", org.apache.thrift.TFieldRequirementType.DEFAULT, 
          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
      metaDataMap = java.util.Collections.unmodifiableMap(tmpMap);
      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(sayHello_result.class, metaDataMap);
    }

    public sayHello_result() {
    }

    public sayHello_result(
      java.lang.String success)
    {
      this();
      this.success = success;
    }

    /**
     * Performs a deep copy on other.
     */
    public sayHello_result(sayHello_result other) {
      if (other.isSetSuccess()) {
        this.success = other.success;
      }
    }

    public sayHello_result deepCopy() {
      return new sayHello_result(this);
    }

    @Override
    public void clear() {
      this.success = null;
    }

    public java.lang.String getSuccess() {
      return this.success;
    }

    public sayHello_result setSuccess(java.lang.String success) {
      this.success = success;
      return this;
    }

    public void unsetSuccess() {
      this.success = null;
    }

    /** Returns true if field success is set (has been assigned a value) and false otherwise */
    public boolean isSetSuccess() {
      return this.success != null;
    }

    public void setSuccessIsSet(boolean value) {
      if (!value) {
        this.success = null;
      }
    }

    public void setFieldValue(_Fields field, java.lang.Object value) {
      switch (field) {
      case SUCCESS:
        if (value == null) {
          unsetSuccess();
        } else {
          setSuccess((java.lang.String)value);
        }
        break;

      }
    }

    public java.lang.Object getFieldValue(_Fields field) {
      switch (field) {
      case SUCCESS:
        return getSuccess();

      }
      throw new java.lang.IllegalStateException();
    }

    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
    public boolean isSet(_Fields field) {
      if (field == null) {
        throw new java.lang.IllegalArgumentException();
      }

      switch (field) {
      case SUCCESS:
        return isSetSuccess();
      }
      throw new java.lang.IllegalStateException();
    }

    @Override
    public boolean equals(java.lang.Object that) {
      if (that == null)
        return false;
      if (that instanceof sayHello_result)
        return this.equals((sayHello_result)that);
      return false;
    }

    public boolean equals(sayHello_result that) {
      if (that == null)
        return false;
      if (this == that)
        return true;

      boolean this_present_success = true && this.isSetSuccess();
      boolean that_present_success = true && that.isSetSuccess();
      if (this_present_success || that_present_success) {
        if (!(this_present_success && that_present_success))
          return false;
        if (!this.success.equals(that.success))
          return false;
      }

      return true;
    }

    @Override
    public int hashCode() {
      int hashCode = 1;

      hashCode = hashCode * 8191 + ((isSetSuccess()) ? 131071 : 524287);
      if (isSetSuccess())
        hashCode = hashCode * 8191 + success.hashCode();

      return hashCode;
    }

    @Override
    public int compareTo(sayHello_result other) {
      if (!getClass().equals(other.getClass())) {
        return getClass().getName().compareTo(other.getClass().getName());
      }

      int lastComparison = 0;

      lastComparison = java.lang.Boolean.valueOf(isSetSuccess()).compareTo(other.isSetSuccess());
      if (lastComparison != 0) {
        return lastComparison;
      }
      if (isSetSuccess()) {
        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.success, other.success);
        if (lastComparison != 0) {
          return lastComparison;
        }
      }
      return 0;
    }

    public _Fields fieldForId(int fieldId) {
      return _Fields.findByThriftId(fieldId);
    }

    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
      scheme(iprot).read(iprot, this);
    }

    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
      scheme(oprot).write(oprot, this);
      }

    @Override
    public java.lang.String toString() {
      java.lang.StringBuilder sb = new java.lang.StringBuilder("sayHello_result(");
      boolean first = true;

      sb.append("success:");
      if (this.success == null) {
        sb.append("null");
      } else {
        sb.append(this.success);
      }
      first = false;
      sb.append(")");
      return sb.toString();
    }

    public void validate() throws org.apache.thrift.TException {
      // check for required fields
      // check for sub-struct validity
    }

    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
      try {
        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, java.lang.ClassNotFoundException {
      try {
        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private static class sayHello_resultStandardSchemeFactory implements org.apache.thrift.scheme.SchemeFactory {
      public sayHello_resultStandardScheme getScheme() {
        return new sayHello_resultStandardScheme();
      }
    }

    private static class sayHello_resultStandardScheme extends org.apache.thrift.scheme.StandardScheme<sayHello_result> {

      public void read(org.apache.thrift.protocol.TProtocol iprot, sayHello_result struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
            break;
          }
          switch (schemeField.id) {
            case 0: // SUCCESS
              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
                struct.success = iprot.readString();
                struct.setSuccessIsSet(true);
              } else { 
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }

      public void write(org.apache.thrift.protocol.TProtocol oprot, sayHello_result struct) throws org.apache.thrift.TException {
        struct.validate();

        oprot.writeStructBegin(STRUCT_DESC);
        if (struct.success != null) {
          oprot.writeFieldBegin(SUCCESS_FIELD_DESC);
          oprot.writeString(struct.success);
          oprot.writeFieldEnd();
        }
        oprot.writeFieldStop();
        oprot.writeStructEnd();
      }

    }

    private static class sayHello_resultTupleSchemeFactory implements org.apache.thrift.scheme.SchemeFactory {
      public sayHello_resultTupleScheme getScheme() {
        return new sayHello_resultTupleScheme();
      }
    }

    private static class sayHello_resultTupleScheme extends org.apache.thrift.scheme.TupleScheme<sayHello_result> {

      @Override
      public void write(org.apache.thrift.protocol.TProtocol prot, sayHello_result struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol oprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        java.util.BitSet optionals = new java.util.BitSet();
        if (struct.isSetSuccess()) {
          optionals.set(0);
        }
        oprot.writeBitSet(optionals, 1);
        if (struct.isSetSuccess()) {
          oprot.writeString(struct.success);
        }
      }

      @Override
      public void read(org.apache.thrift.protocol.TProtocol prot, sayHello_result struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol iprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        java.util.BitSet incoming = iprot.readBitSet(1);
        if (incoming.get(0)) {
          struct.success = iprot.readString();
          struct.setSuccessIsSet(true);
        }
      }
    }

    private static <S extends org.apache.thrift.scheme.IScheme> S scheme(org.apache.thrift.protocol.TProtocol proto) {
      return (org.apache.thrift.scheme.StandardScheme.class.equals(proto.getScheme()) ? STANDARD_SCHEME_FACTORY : TUPLE_SCHEME_FACTORY).getScheme();
    }
  }

}

1.3 实现HelloWorldService

public class HelloWordServiceImpl implements HelloWorldService.Iface {

    @Override
    public String sayHello(String username) throws TException {
        return "hello, " + username;
    }
}

1.4 服务端

@Slf4j
public class ThriftServer {

    public static final int SERVER_PORT = 8010;

    public static void main(String[] args) throws Exception {
        log.info("服务端开启....");
        // 启动服务
        new TSimpleServer(new TServer.Args(new TServerSocket(new ServerSocket(SERVER_PORT)))
                .processor(new HelloWorldService.Processor<HelloWorldService.Iface>(new HelloWordServiceImpl()))
                .protocolFactory(new TBinaryProtocol.Factory())).serve();
    }
}

1.5 客户端

@Slf4j
public class ThriftClient {

    // 服务端IP地址
    public static final String SERVER_IP = "127.0.0.1";

    // 服务端端口号
    public static final int SERVER_PORT = 8010;

    public static void main(String[] args) throws Exception {
        log.info("客户端启动....");
        try (TTransport transport = new TSocket(SERVER_IP, SERVER_PORT)) {
            TProtocol protocol = new TBinaryProtocol(transport);
            HelloWorldService.Client client = new HelloWorldService.Client(protocol);
            transport.open();
            System.out.println("result = [remote: " + client.sayHello("wangxiaohu") + "]");
        } catch (Exception e) {
            log.error("客户端启动失败", e);
        }
    }
}

1.6 启动服务端、客户端进行测试

• 先启动服务端
• 在启动客户端

二、微服务间相互调用

2.1 通过thrift生成HelloWorldService

往前调转 1.2 执行命令生成Java文件

2.2 thrift客户端代理

/**
 * Thrift客户端代理
 */
@SuppressWarnings({"unchecked" })
public class ThriftClientProxy {

    // 服务端端口号
    public static final int SERVER_PORT = 50000;

    public static <T> T getRemoteProxyObj(final Class<?> serviceInterface, String host) {
        return (T) Proxy.newProxyInstance(serviceInterface.getClassLoader(),
                new Class<?>[]{serviceInterface},
                (proxy, method, args) -> {
                    TTransport transport = new TSocket(host, SERVER_PORT);
                    TProtocol protocol = new TBinaryProtocol(transport);
                    Class<?>[] argsClass = new Class[]{TProtocol.class};
                    Constructor<?> cons = Class.forName(serviceInterface.getName().replace("Iface", "Client")).getConstructor(argsClass);
                    T client = (T) cons.newInstance(protocol);
                    transport.open();
                    return method.invoke(client, args);
                });
    }
}

2.3 Thrift服务端代理

/**
 * Thrift服务端代理
 */
public class ThriftServerProxy {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private static final int THRIFT_SERVER_PORT = 50000;// 端口
    private String serviceInterface;// 实现类接口
    private Object serviceImplObject;// 实现类

    @SuppressWarnings({ "unchecked", "rawtypes" })
    public void start() {
        new Thread(() -> {
            try {
                TServerSocket serverTransport = new TServerSocket(THRIFT_SERVER_PORT);
                // 实现类处理类class
                Class Processor = Class.forName(getServiceInterface() + "$Processor");
                // 接口
                Class Iface = Class.forName(getServiceInterface() + "$Iface");
                // 接口构造方法类
                Constructor con = Processor.getConstructor(Iface);
                // 实现类处理类
                TProcessor processor = (TProcessor) con.newInstance(serviceImplObject);
                TBinaryProtocol.Factory protocolFactory = new TBinaryProtocol.Factory(true, true);
                TThreadPoolServer.Args args = new TThreadPoolServer.Args(serverTransport);
                args.protocolFactory(protocolFactory);
                args.processor(processor);
                TServer server = new TThreadPoolServer(args);
                logger.info("Starting thrift server on port " + THRIFT_SERVER_PORT + " ..." + getServiceInterface());
                server.serve();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
    }

    public ThriftServerProxy() {}

    public ThriftServerProxy(String serviceInterface, Object serviceImplObject) {
        this.serviceInterface = serviceInterface;
        this.serviceImplObject = serviceImplObject;
    }

    public String getServiceInterface() {
        return serviceInterface;
    }

    public void setServiceInterface(String serviceInterface) {
        this.serviceInterface = serviceInterface;
    }

    public Object getServiceImplObject() {
        return serviceImplObject;
    }

    public void setServiceImplObject(Object serviceImplObject) {
        this.serviceImplObject = serviceImplObject;
    }

}

2.4 实现注解Rpc Service导入

@Slf4j
@Component
public class ThriftClientInterceptor implements BeanPostProcessor {

    @Resource
    private DiscoveryClient discoveryClient;

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        Class<?> beanClass = bean.getClass();
        Field[] fields = beanClass.getDeclaredFields();
        final Random random = new Random();
        for (Field field : fields) {
            ImpThrift impThrift = field.getAnnotation(ImpThrift.class);
            if (Objects.isNull(impThrift)) continue;
            try {
                String serviceId = impThrift.def();
                List<ServiceInstance> instances = discoveryClient.getInstances(serviceId);
                if (CollectionUtils.isEmpty(instances)) {
                    // throw new ExtThriftException("instance [" + serviceId + "] not exists");
                    log.warn("instance [{}] not exists", serviceId);
                }
                ServiceInstance serviceInstance = instances.get(random.nextInt(instances.size()));
                field.setAccessible(true);
                field.set(bean, ThriftClientProxy.getRemoteProxyObj(field.getType(), serviceInstance.getHost()));
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        return BeanPostProcessor.super.postProcessAfterInitialization(bean, beanName);
    }
}

2.5 实现注解Rpc Service导出

@Component
public class ThriftServerInterceptor implements BeanPostProcessor {

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        ExtThrift extThrift = bean.getClass().getAnnotation(ExtThrift.class);
        if (!Objects.isNull(extThrift)) {
            // String serviceName = extThrift.serviceName();
            Class<?>[] interfaces = bean.getClass().getInterfaces();
            ThriftServerProxy thriftServerProxy = new ThriftServerProxy(interfaces[0].getName().replace("$Iface", ""), bean);
            thriftServerProxy.start();
        }
        return BeanPostProcessor.super.postProcessAfterInitialization(bean, beanName);
    }
}

2.6 A服务引入含有thrift生成的service的SDK对Service进行实现

@ExtThrift(serviceName = "HelloWorldService")
@Service
public class HelloWorldServiceImpl implements HelloWorldService.Iface {

    @Override
    public String sayHello(String username) throws TException {
        return username;
    }
}

@RestController
@Slf4j
public class PaymentController {

    @Value("${server.port}")
    private String serverPort;

    @Autowired
    private HelloWorldService.Iface helloWorldService;

    @RequestMapping(value = "/payment/zk")
    public String paymentZk(@RequestParam("username") String username) throws TException {
        return "SpringCloud with zookeeper: " + serverPort + "\t" + UUID.randomUUID() + "-" + helloWorldService.sayHello(username);
    }
}

2.7 B服务引入含有thrift生成的service的SDK和A服务进行调用

@RestController
@Slf4j
public class OrderController {

    @Value("${server.port}")
    private String serverPort;

    @ImpThrift(def = "CLOUD-PAYMENT-SERVICE", serviceName = "helloWorldService")
    private HelloWorldService.Iface helloWorldService;

    @RequestMapping(value = "/payment/zk")
    public String paymentZk(@RequestParam("username") String username) throws TException {
        return "SpringCloud with zookeeper: " + serverPort + "\t" + UUID.randomUUID() + "-" + helloWorldService.sayHello(username);
    }
}

2.8 启动zk

zhinian@192 bin % ./zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /Users/zhinian/Desktop/tools/zookeeper-3.4.11/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

2.9 启动AB服务进行测试

调用成功 !