java实现PostJSON请求具体代码如下：packagecom.sunkey.httpTest;importjava.io.DataOutputStream;importjava.io.InputStream;importjava.net.URL;importjava.net.URLConnection;importorg.apache.commons.io.IOUtils;publicclassHttpPostJson{/***@paramargs*/publicstaticvoidmain(String[]args){//TODOAuto-generatedmethodstubStringURL="http://localhost:18090";StringJson=findXmlInfo();Json="{\"姓名\":\"大憨\",\"年龄\":24}";StringpostResult=doHttpPost(Json,URL);System.out.println("postResult:"+postResult);}privatestaticStringfindXmlInfo(){//TODOAuto-generatedmethodstubreturnnull;}publicstaticStringdoHttpPost(StringxmlInfo,StringURL){System.out.println("发起的数据:"+xmlInfo);byte[]xmlData=xmlInfo.getBytes();InputStreaminstr=null;java.io.ByteArrayOutputStreamout=null;try{URLurl=newURL(URL);URLConnectionurlCon=url.openConnection();urlCon.setDoOutput(true);urlCon.setDoInput(true);urlCon.setUseCaches(false);urlCon.setRequestProperty("Content-Type","text/xml");urlCon.setRequestProperty("Content-length",String.valueOf(xmlData.length));System.out.println(String.valueOf(xmlData.length));DataOutputStreamprintout=newDataOutputStream(urlCon.getOutputStream());printout.write(xmlData);printout.flush();printout.close();instr=urlCon.getInputStream();byte[]bis=IOUtils.toByteArray(instr);StringResponseString=newString(bis,"UTF-8");if((ResponseString==null)||("".equals(ResponseString.trim()))){System.out.println("返回空");}System.out.println("返回数据为:"+ResponseString);returnResponseString;}catch(Exceptione){e.printStackTrace();return"0";}finally{try{out.close();instr.close();}catch(Exceptionex){return"0";}}}}