Android客户端与JAVA服务端JSON传值

分类：android 2012-05-24 00:38 1905人阅读评论(0) 收藏举报 JSON android

假设你已经了解JSON数据是怎么一回事了。

1、服务端

服务器端使用json-lib 组装JSON数据的，在Servlet类或者相关容器类中，这里是在struts2中的action类中操作的，代码如下：

[java] view plain copy

Listlist=userService.getAllObject();//这里是从数据库查询出相关数据，封装成对象，放入list中的

JSONArrayja=JSONArray.fromObject(list);//组装成JSON数据

System.out.println("ja-->"+ja.toString());

/*打印出来的数据如下所示

[

{"createDate":"2012-05-2400:04:10.0","createMan":"system","inteUpdateDate":"",

"integralId":-1,"isUpdateInteApp":0,"isUpdateRecApp":0,"lb":0,"needGames":15,

"phoneIMEI":"1234556","phoneSystem":"","phoneType":"","recUpdateDate":"",

"recomAppId":-1,"screenHeight":0,"screenWidth":0,"type":0,"userId":10100},

{"createDate":"2012-05-2400:04:56.0","createMan":"system","inteUpdateDate":"",

"integralId":-1,"isUpdateInteApp":0,"isUpdateRecApp":0,"lb":0,"needGames":15,

"phoneIMEI":"1234557","phoneSystem":"","phoneType":"","recUpdateDate":"",

"recomAppId":-1,"screenHeight":0,"screenWidth":0,"type":0,"userId":10101}

]

*/

HttpServletResponseresponse=ServletActionContext.getResponse();

PrintWriterout=response.getWriter();

out.write(ja.toString());//返回字符串格式的JSON数据

out.flush();

out.close();

2、客户端

假设服务端提供的接口地址为：http://192.168.1.102:8088/AndroidService/service/getUsers.action

客户端访问服务端及解析服务端返回JSON数据主要代码如下：

[java] view plain copy

privatevoidgetLocation(){

StringBuilderbuilder=newStringBuilder();

HttpClientclient=newDefaultHttpClient();

HttpGetget=newHttpGet("http://192.168.1.102:8088/AndroidService/service/getUsers.action");

try{

HttpResponseresponse=client.execute(get);//这里使用的是Get方式访问服务端接口，当然也可以使用Post方式

BufferedReaderreader=newBufferedReader(newInputStreamReader(

response.getEntity().getContent()));

for(Strings=reader.readLine();s!=null;s=reader.readLine()){

builder.append(s);

}

JSONArrayarray=newJSONArray(newString(builder.toString()));

for(inti=0;i<array.length();i++){

JSONObjectitem=array.getJSONObject(i);

StringuserId=item.getString("userId");

StringphoneIMEI=item.getString("phoneIMEI");

StringcreateMan=item.getString("createMan");

StringcreateDate=item.getString("createDate");

//这里txtInfo是一个TextView控件

txtInfo.append("userId:"+userId+"phoneIMEI:"+phoneIMEI

+"createMan:"+createMan+"createDate:"+createDate);

}

}catch(Exceptione){

e.printStackTrace();

}

}

JSONArray的使用

Android客户端与JAVA服务端JSON传值

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