java mysql异常boo_Springboot统一异常处理并保存到数据库

一.统一异常处理

在springboot项目中利用@ControllerAdvice 这个注解可以更好的实现异常的捕获处理。

@ControllerAdvice,是spring3.2提供的新注解,从名字上就可以看出大体的意思是控制器增强。

@Target(ElementType.TYPE)

@Retention(RetentionPolicy.RUNTIME)

@Documented

@Component

public @interface ControllerAdvice {

}

二.创建ExceptionController类

创建 ExceptionController,并添加 @ControllerAdvice注解。

import com.left.druid.utils.Exception.ErrorLogsUtil;

import com.left.enums.CodeEnums;

import com.left.pub.LpayException;

import com.left.pub.ResponseData;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.web.bind.annotation.ControllerAdvice;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;

/**

* Created by pillar on 2017/3/27.

* qq 347637454

*/

@ControllerAdvice

public class ExceptionHandlers {

Logger logger = LoggerFactory.getLogger(ExceptionHandlers.class);

@ExceptionHandler(value = Exception.class)

@ResponseBody

public ResponseData handle(Exception e) {

ErrorLogsUtil.error(e); //将异常写入数据库

if (e instanceof LpayException) {

LpayException pillarException = (LpayException) e;

return new ResponseData(pillarException.getStatus());

}else if (e instanceof MethodArgumentTypeMismatchException){

return new ResponseData(CodeEnums.PARAM_TYPE_ERROR,(Object)((MethodArgumentTypeMismatchException) e).getName());

}else {

logger.info(e.toString());

e.printStackTrace();

return new ResponseData(CodeEnums.ERROR);

}

}

}

其中ResponseData类为封装的统一返回对象。

import com.fasterxml.jackson.annotation.JsonInclude;

import com.left.enums.CodeEnums;

import java.io.Serializable;

/**

*

* @date 2017/3/27

* qq 347637454

* 统一返回对象

*/

public class ResponseData implements Serializable{

/**

* 返回数据

*/

private Object data;

/**

* 错误描述

*/

private String msg;

private int code;

@JsonInclude(JsonInclude.Include.NON_NULL)

private String sign;

public String getSign() {

return sign;

}

public void setSign(String sign) {

this.sign = sign;

}

public ResponseData(CodeEnums status) {

this.msg = status.getMessage();

this.code = status.getCode();

}

public ResponseData() {

}

public ResponseData(Object data,String api_key){

this.data = data;

this.msg = CodeEnums.SUCCESS.getMessage();

this.code = CodeEnums.SUCCESS.getCode();

this.sign = api_key;

}

public ResponseData(CodeEnums enums,Object data) {

this.data = data;

this.msg = enums.getMessage();

this.code = enums.getCode();

}

public ResponseData(int code,String msg){

this.code =code;

this.msg = msg;

}

public Object getData() {

return data;

}

public void setData(Object data) {

this.data = data;

}

public String getMsg() {

return msg;

}

public void setMsg(String msg) {

this.msg = msg;

}

public int getCode() {

return code;

}

public void setCode(int code) {

this.code = code;

}

@Override

public String toString() {

return "ResponseData{" +

"data=" + data +

", msg='" + msg + '\'' +

", code=" + code +

", sign='" + sign + '\'' +

'}';

}

}

其中还有句代码为将异常写入数据库,需要ErrorLogsUtil.java工具类

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.SQLException;

/**

* @Date 14:29 2018/05/29

* @Description 错误日志工具

*/

public class ErrorLogsUtil {

/**

* @param: [e]

* @return void

* @Description 打印错误日志并保存到数据库

*/

public static void error(Exception e) {

StackTraceElement stackTraceElement= e.getStackTrace()[0];

Connection con = null;

try {

Class.forName(MySqlConfig.driver);

con = (Connection) DriverManager.getConnection(MySqlConfig.url, MySqlConfig.username, MySqlConfig.password);

} catch (SQLException e1) {

e1.printStackTrace();

} catch (ClassNotFoundException e1) {

e1.printStackTrace();

}

PreparedStatement ps = null;

String sql = "INSERT INTO itc_error_logs VALUES (UUID(), NOW(), ?, ?)";

try {

ps = con.prepareStatement(sql);

//打印日志,错在第几行

String errorInfo = e.toString()+",errorMassage:"+stackTraceElement+","+"errorLine:"+stackTraceElement.getLineNumber();

ps.setString(1, errorInfo);

ps.execute();

} catch (SQLException e1) {

e1.printStackTrace();

} finally {

try {

if(ps != null) {

ps.close();

}

if(con != null) {

con.close();

}

} catch (SQLException e1) {

e1.printStackTrace();

}

}

}

}

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