Android + struts2服务器 Json 通信
json
适用于现代 C++ 的 JSON。
项目地址：https://gitcode.com/gh_mirrors/js/json
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由于之前一直都是做客户端,通信方式用的是JSON,而从未自己搭建过服务器,今天趁着中午有点时间就搭建一个简单的服务器
我所用是struts2和JSON搭建的简单服务器
服务器:
1.New一个新的Web Project
2.导入struts2和JSON所需要的包,
3.编写实体类Userinfo:
package bean;
import java.io.Serializable;
public class Userinfo implements Serializable {
/**
* @author ZJG
*/
private static final long serialVersionUID = 1L;
private int userId;
private String userName;
private String password;
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
4.编写Action:
package test;
import java.util.ArrayList;
import java.util.List;
import bean.Userinfo;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport {
/**
* @author ZJG
*/
private static final long serialVersionUID = 1L;
private String message;//使用json返回单个值
private Userinfo userinfo;//使用json返回对象
private List userInfoList;//使用json返回list对象
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Userinfo getUserinfo() {
return userinfo;
}
public void setUserinfo(Userinfo userinfo) {
this.userinfo = userinfo;
}
public List getUserInfoList() {
return userInfoList;
}
public void setUserInfoList(List userInfoList) {
this.userInfoList = userInfoList;
}
//返回单个值
public String returnMag(){
this.message = "成功返回单个值";
return SUCCESS;
}
//返回对象
public String returnUser(){
userinfo = new Userinfo();
userinfo.setUserId(10000);
userinfo.setUserName("张三");
userinfo.setPassword("123456");
return SUCCESS;
}
//返回list对象
public String returnList(){
userInfoList = new ArrayList<Userinfo>();
Userinfo ui = new Userinfo();
ui.setUserId(10000);
ui.setUserName("张三1");
ui.setPassword("111111");
Userinfo u1 = new Userinfo();
u1.setUserId(10000);
u1.setUserName("张三2");
u1.setPassword("222222");
userInfoList.add(ui);
userInfoList.add(u1);
return SUCCESS;
}
public String returnObject(){
userInfoList = new ArrayList<Userinfo>();
Userinfo ui = new Userinfo();
ui.setUserId(10000);
ui.setUserName("object张三1");
ui.setPassword("object111111");
Userinfo u1 = new Userinfo();
u1.setUserId(10000);
u1.setUserName("object张三2");
u1.setPassword("object222222");
userInfoList.add(ui);
userInfoList.add(u1);
userinfo = new Userinfo();
userinfo.setUserId(3333);
userinfo.setUserName("object李四");
userinfo.setPassword("object0000099");
this.message = "object成功返回单个值";
return SUCCESS;
}
}
5.配置struts.xml:
<package name="default" extends="json-default" >
<action name="returnMag" class="test.LoginAction" method="returnMag" >
<result name="success" type="json">
<param name="includeProperties">message</param>
</result>
</action>
<action name="returnUser" class="test.LoginAction" method="returnUser">
<result name="success" type="json">
<param name="includeProperties">
userinfo\.userId,userinfo\.userName,userinfo\.password
</param>
</result>
</action>
<action name="returnList" class="test.LoginAction" method="returnList">
<result name="success" type="json">
<param name="includeProperties">
userInfoList\[\d+\]\.userName,userInfoList\[\d+\]\.password,
userinfo\.userId,userinfo\.userName,userinfo\.password
</param>
</result>
</action>
<action name="returnObject" class="test.LoginAction" method="returnObject">
<result name="success" type="json">
<param name="includeProperties">
userInfoList\[\d+\]\.userName,userInfoList\[\d+\]\.password,
userinfo\.userId,userinfo\.userName,userinfo\.password,
message
</param>
</result>
</action>
</package>
6.配置web.xml
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>7.创建login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form name="form1" action="returnMag" namespace="/json" >
<s:submit label="submit"></s:submit>
</s:form>
</body>
</html>
其实第7步可以省略.
服务器完成.
android客户端:
同样还是新建个android项目:
1.修改main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
android:id="@+id/tvid"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="String对象"
android:id="@+id/buttonid"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="bean对象"
android:id="@+id/buttonid1"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="List对象"
android:id="@+id/buttonid2"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Object对象"
android:id="@+id/buttonid3"
/>
</LinearLayout>
2.修改Activity
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView tv = (TextView) findViewById(R.id.tvid);
Button button = (Button) findViewById(R.id.buttonid);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String result = new Communication().communication("returnMag.action");
tv.setText(result);
}
});
Button button1 = (Button) findViewById(R.id.buttonid1);
button1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String result = new Communication().communication("returnUser.action");
tv.setText(result);
}
});
Button button2 = (Button) findViewById(R.id.buttonid2);
button2.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String result = new Communication().communication("returnList.action");
tv.setText(result);
}
});
Button button3 = (Button) findViewById(R.id.buttonid3);
button3.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String result = new Communication().communication("returnObject.action");
tv.setText(result);
}
});
3.新建一个与服务器通信的类Communication.java
public class Communication {
/**
* @param 只发送普通数据,调用此方法
* @param urlString 对应的 页面
* @param params 需要发送的相关数据 包括调用的方法
* @return
*/
public String communication(String urlString){
HttpClient client = new DefaultHttpClient();
client.getConnectionManager().closeIdleConnections(20, TimeUnit.SECONDS);//20秒
String result="";
String uploadUrl="http://192.168.1.101:8080/SSH"+"/";///http://192.168.10.9/bingo/Server/code
String MULTIPART_FORM_DATA = "multipart/form-data";
String BOUNDARY = "---------7d4a6d158c9"; //数据分隔线
if (!urlString.equals("")) {
uploadUrl = uploadUrl+urlString;
try {
URL url = new URL(uploadUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);//允许输入
conn.setDoOutput(true);//允许输出
conn.setUseCaches(false);//不使用Cache
conn.setConnectTimeout(6000);// 6秒钟连接超时
conn.setReadTimeout(25000);// 25秒钟读数据超时
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Charset", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA + "; boundary=" + BOUNDARY);
StringBuilder sb = new StringBuilder();
//上传的表单参数部分，格式请参考文章
// for (Map.Entry<String, String> entry : params.entrySet()) {//构建表单字段内容
// sb.append("--");
// sb.append(BOUNDARY);
// sb.append("\r\n");
// sb.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");
// sb.append(entry.getValue());
// sb.append("\r\n");
// }
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.write(sb.toString().getBytes());
dos.writeBytes("--" + BOUNDARY + "--\r\n");
dos.flush();
InputStream is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
result = br.readLine();
}catch (Exception e) {
result = "{\"ret\":\"898\"}";
}
}
return result;
}
}
到此客户端搭建完成:
好了现在可以体验哈自己的服务器和android客服端的 json通信了
转载说明:http://blog.csdn.net/z104207/article/details/6672109
GitHub 加速计划 / js / json
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适用于现代 C++ 的 JSON。
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