2019独角兽企业重金招聘Python工程师标准>>> 
使用java开发SDK你可能会用的4个库
- xstream
- okhttp
- fastjson
- spring boot
xstream
https://github.com/x-stream/xstream/
用法特别简单
定义javabean
package com.xxx.bean;
public class GetAsnStatus {
private String customerCode;
private String warehouseCode;
private String asnCode;
private String currentPage;
public String getCustomerCode() {
return customerCode;
}
public void setCustomerCode(String customerCode) {
this.customerCode = customerCode;
}
public String getWarehouseCode() {
return warehouseCode;
}
public void setWarehouseCode(String warehouseCode) {
this.warehouseCode = warehouseCode;
}
public String getAsnCode() {
return asnCode;
}
public void setAsnCode(String asnCode) {
this.asnCode = asnCode;
}
public String getCurrentPage() {
return currentPage;
}
public void setCurrentPage(String currentPage) {
this.currentPage = currentPage;
}
}
然后写个简单的测试
package com.xxx.test;
import com.xxx.bean.AsnItem;
import com.xxx.bean.GetAsnStatus;
import com.xxx.bean.Product;
import com.xxx.bean.Sender;
import com.xxx.bean.SyncAsnInfo;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class TestGetAsnStatus {
public static void main(String[] args) {
XStream xstream = new XStream(new DomDriver("utf8"));
xstream.alias("GetAsnStatus", GetAsnStatus.class);
GetAsnStatus asn = new GetAsnStatus();
asn.setCustomerCode("TB00002");
asn.setWarehouseCode("BEST-BJ-001");
asn.setAsnCode("ASN200909100033445");
String xml = xstream.toXML(asn);
System.out.println(xml);
}
}
返回结果
//
//
// TB00002
// BEST-BJ-001
// ASN200909100033445
//
xstream with cdata
先实现一个Writer
CustomWriter
package com.xxx.core;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.naming.NameCoder;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import java.io.Writer;
public class CustomWriter extends PrettyPrintWriter {
private boolean outCDATA;
public CustomWriter(Writer writer, NameCoder nameCoder) {
super(writer, nameCoder);
}
@Override
public void startNode(String name, Class clazz) {
super.startNode(name, clazz);
outCDATA = clazz.equals(String.class);
}
@Override
protected void writeText(QuickWriter writer, String text) {
if (outCDATA) {
writer.write("");
} else {
writer.write(text);
}
}
}
说明一下，这里startNode方法是给所有的String类型的value增加cdata，如果有自己的业务，可以在此处判断。
自己实现一个Xpp驱动，返回上面自定的writer
CustomXppDriver
package com.xxx.core;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.Xpp3Driver;
import java.io.Writer;
public class CustomXppDriver extends Xpp3Driver {
@Override
public HierarchicalStreamWriter createWriter(Writer out) {
return new CustomWriter(out, getNameCoder());
}
}
封装一个简单的工厂
package com.xxx.core;
import com.thoughtworks.xstream.XStream;
public abstract class XStreamFactory {
public static XStream buildXStream() {
return new XStream();
}
public static XStream buildXStreamCDATA() {
return new XStream(new CustomXppDriver());
}
}
buildXStreamCDATA里使用CustomXppDriver，根据上面的代码可知，CustomXppDriver里使用CustomWriter，逻辑就很清晰了
测试一下
注意：依赖xmlpull库，http://www.xmlpull.org/v1/download/需要放到path里
package com.xxx.test;
import java.util.ArrayList;
import java.util.Set;
import com.xxx.bean.Product;
import com.xxx.bean.SyncProductInfo;
import com.xxx.core.XStreamFactory;
import com.xxx.dom.Person;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class TestSyncProductInfo {
public static void main(String[] args) {
SyncProductInfo info = new SyncProductInfo();
info.setCustomerCode("customer");
Product p1 = new Product();
p1.setName("sss");
p1.setSkuCode("TTYC43821K59160");
Product p2 = new Product();
p2.setName("bbb");
p2.setSkuCode("TTYC43821K56165");
info.getProducts().add(p1);
info.getProducts().add(p2);
XStream xStreamCDATA = XStreamFactory.buildXStreamCDATA();
xStreamCDATA.alias("SyncProductInfo", SyncProductInfo.class);
xStreamCDATA.alias("Product", Product.class);
String xmlWithCDATA = xStreamCDATA.toXML(info);
System.out.println(xmlWithCDATA);
}
}
okhttp
写SDK是要往服务器上发请求，所以需要使用http库，简单起见使用okhttp，其实在android上很多应用也是用这个库的。
https://github.com/square/okhttp
OkHttp v2.0 depends on Okio v1.0. You can download its jar here. This worked for me
Reference from https://github.com/square/okhttp/issues/870
你还需要下载 Okio, OKhttp使用这个库用来快速的I/O处理 在这里下载 latest JAR.
get
OkHttpClient client = new OkHttpClient();
String run(String url) throws IOException {
Request request = new Request.Builder()
.url(url)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
post
public static final MediaType JSON
= MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
String post(String url, String json) throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
fastjson
阿里温少开发的最快的json解析库
用法就不用贴代码了，自己看 https://github.com/alibaba/fastjson
spring boot
- github仓库 https://github.com/spring-projects/spring-boot
- 中文资料 http://www.infoq.com/cn/articles/microframeworks1-spring-boot/
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