与android客户端以JSON格式进行数据通信

AndroidClient代码：

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package android.test;

import java.io.BufferedInputStream;

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import net.sf.json.JSONObject;

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.StringEntity;

import org.apache.http.impl.client.DefaultHttpClient;

import org.junit.Test;

import yt.tool.Log;

public class AndroidClient {

@Test

public void HttpPostData() throws Exception {

for(int i = 0;i < 1;i++){

HttpClient httpclient = new DefaultHttpClient();

String uri ="http://192.168.1.55:8888/android/AndroidService";

HttpPost httppost = new HttpPost(uri);

//添加http头信息

httppost.addHeader("Content-Type", "application/json");

httppost.addHeader("User-Agent", "mozilla/5.0");

JSONObject obj = new JSONObject();

obj.put("age", 26);

obj.put("name", "nikerlover");

obj.put("password", 45667);

System.out.println("测试结果："+obj.toString());

StringEntity se = new StringEntity(obj.toString());

httppost.setEntity(se);

HttpResponse response = httpclient.execute(httppost);

//检验状态码，如果成功接收数据

int code = response.getStatusLine().getStatusCode();

if (code == 200) {

System.out.println("######################success####################");

BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

String line = null;

while((line = reader.readLine()) !=null){

System.out.println(line);

}

}

}

}

public static String readJSONString(InputStream inputStream){

StringBuffer json = new StringBuffer();

int line;

try {

BufferedInputStream reader = new BufferedInputStream(inputStream);

System.out.println("测试返回结果内容1");

while((line = reader.read()) != 0) {

json.append(line);

}

Log.w("返回服务器端结果", "内容：" + json);

System.out.println("测试返回结果内容2");

reader.close();

}

catch(Exception e) {

System.out.println(e.toString());

}

return json.toString();

}

}

###############################

AndroidService代码

#############################

package android.test;

import java.io.BufferedReader;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.Writer;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import yt.tool.Log;

import net.sf.json.JSONObject;

public class AndroidService extends HttpServlet {

private String Json;

private int age;

private String name;

private String password;

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

// TODO Auto-generated method stub

doPost(req, resp);

}

@Override

protected void doPost(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

try {

String jsonContent = readJSONString(req);

JSONObject obj= JSONObject.fromObject(jsonContent);

AndroidService ase =(AndroidService)JSONObject.toBean(obj, AndroidService.class);

Log.w("年龄数据", "内容：" + ase.getAge());

resp.setContentType("application/json;charset=UTF-8");

Writer out = resp.getWriter();

out.write(jsonContent);

out.flush();

out.close();

} catch (Exception e) {

e.printStackTrace();

}

}

public String getJson() {

return Json;

}

public void setJson(String json) {

Json = json;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public static byte[] readInputStream(InputStream inStream) throws Exception{

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] buffer = new byte[1024];

int len = 0;

while( (len = inStream.read(buffer)) !=-1 ){

outStream.write(buffer, 0, len);

}

byte[] data = outStream.toByteArray();//网页的二进制数据

outStream.close();

inStream.close();

return data;

}

public static String readJSONString(HttpServletRequest request){

StringBuffer json = new StringBuffer();

String line = null;

try {

BufferedReader reader = request.getReader();

while((line = reader.readLine()) != null) {

json.append(line);

}

Log.w("httpclient测试", "内容：" + json);

}

catch(Exception e) {

System.out.println(e.toString());

}

return json.toString();

}

}

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web.xml中的配置

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">

<display-name>Welcome to Tomcat</display-name>

<description>

Welcome to Tomcat

</description>

<servlet>

<servlet-name>fetchInfo</servlet-name>

<servlet-class>android.test.AndroidService</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>fetchInfo</servlet-name>

<url-pattern>/android/AndroidService</url-pattern>

</servlet-mapping>

</web-app>