服务器代码:用于接收客户端信息
package ches; import java.io.IOException;
import java.io.PrintWriter; import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/chess")
public class chess extends HttpServlet { public chess() {
super();
} public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { String username = request.getParameter("name");
String password = request.getParameter("sex"); System.out.println(username);
System.out.println(password); } }
接下来是android 项目搭建
创建一个异步请求 asyncText类
package com.example.asynctask4; import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder; import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast; public class asyncText extends AsyncTask{
private static final String Url = "http://192.168.1.37:8080/ches/chess";
private String name,sex;
private MainActivity activity; private String errorMessage = "";
private String messageInfo = ""; public asyncText(MainActivity activity){
this.activity= activity;
}
@Override
protected Object doInBackground(Object... params) {
name = (String) params[0];
sex = (String) params[1]; try {
URL url = new URL(Url); HttpURLConnection conn = (HttpURLConnection) url.openConnection();
//对连接进行配置
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setConnectTimeout(3000);
conn.setRequestMethod("POST"); //获取一个输出流
OutputStream os = conn.getOutputStream();
//上传文本数据
DataOutputStream dos = new DataOutputStream(os);
dos.writeBytes("name="+URLEncoder.encode(name,"UTF-8")+"&sex="+URLEncoder.encode(sex,"UTF-8"));
dos.flush();
dos.close(); if(conn.getResponseCode()==200){
//输入流
InputStream is = conn.getInputStream(); //reader（注意UTF-8读）
InputStreamReader isr = new InputStreamReader(is,"UTF-8");
//缓冲区，防止读死
BufferedReader br = new BufferedReader(isr);
String ReadOneline = null; //多行数据时，减少不断创建String对象
StringBuffer sb = new StringBuffer();
while ( (ReadOneline=br.readLine())!=null ){
sb.append(ReadOneline); }
br.close();
isr.close();
is.close();
conn.disconnect();
return sb.toString();
}else{
errorMessage = "服务器繁忙，请稍后再试("+conn.getResponseCode()+")";
return "errorserver";
}
} catch (Exception e) {
Log.i("http", "http执行_获取异常");
errorMessage = e.getMessage();
return "errorclient";
} }
@Override
protected void onPostExecute(Object result) {
// TODO Auto-generated method stub if ("errorclient".equals(result)){
Toast.makeText(activity, "连接不到服务器"+messageInfo, 500).show();
return;
}if("errorserver".equals(result)){
Toast.makeText(activity, "服务器正在维护中"+messageInfo, 500).show();
return;
}if("ok".equals(result)){
Toast.makeText(activity, "注册成功", 500).show();
} super.onPostExecute(result);
}
}
MainActivity.java
package com.example.asynctask4; import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText; public class MainActivity extends Activity {
private EditText editText1,editText2;
private Button button;
private String name,sex;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); editText1 = (EditText) findViewById(R.id.editText1);
editText2 = (EditText) findViewById(R.id.editText2);
button = (Button) findViewById(R.id.button1); button.setOnClickListener(new OnClickListener() { @Override
public void onClick(View v) {
name = editText1.getText().toString().trim();
sex = editText2.getText().toString().trim();
asyncText as = new asyncText(MainActivity.this);//传值到异步多线程
as.execute(name,sex);//执行
}
});
} }
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.asynctask4.MainActivity" > <EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="24dp"
android:ems="10"
android:inputType="textPersonName" /> <EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText1"
android:layout_below="@+id/editText1"
android:layout_marginTop="14dp"
android:ems="10" /> <Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText2"
android:layout_below="@+id/editText2"
android:layout_marginLeft="23dp"
android:layout_marginTop="29dp"
android:text="上传文本" /> </RelativeLayout>
xmlx效果图：
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还有一点很重要：就是要给联网的权限
<uses-permission android:name="android.permission.INTERNET"/> 【数据联网】
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>【WIFI联网】
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客户端
服务器接收的结果:---------------------------------------------------------------------------------
