Android连接SpringMVC配置信息
16lz
2021-01-23
Android Studio 中的模拟器向此电脑的Tomcat服务器发送请求，Tomcat服务器的SpringMVC处理http请求，
#报错信息：No Network Security Config specified, using platform default.Failed to connect to /192.168.xxxx:8080.
解决方案：AndroidMainfest.xml文件配置如下
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.myapplication"> <!--- 添加网络权限 --> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme" <!--- 网络安全配置 --> android:usesCleartextTraffic="true" android:networkSecurityConfig="@xml/network_security_config"> <uses-library android:name="org.apache.http.legacy" android:required="false" /> <activity android:name=".ui.login.MainActivity"></activity> <activity android:name=".ui.login.LogActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity></manifest>在res目录下新建资源文件：
network_security_config.xml
network_security_config.xml 文件配置信息：
<?xml version="1.0" encoding="utf-8"?><network-security-config> <base-config cleartextTrafficPermitted="true" /></network-security-config>LogActivity.java文件（仅仅用于测试是否能连接到Tomcat）：
package com.example.myapplication.ui.login;import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import com.example.myapplication.R;import com.example.myapplication.data.model.HttpUtils;import com.example.myapplication.data.model.NetUtils;import com.example.myapplication.data.model.User;import com.google.gson.Gson;import net.sf.json.JSONObject;import java.io.BufferedReader;import java.io.IOException;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 okhttp3.Call;import okhttp3.Response;public class LogActivity extends AppCompatActivity { private EditText ed_username; private EditText ed_password; private Button btn_login; String name; String password; String urlPath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_log); btn_login = (Button)findViewById(R.id.btn_login); btn_login.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { ed_username = findViewById(R.id.ed_username); //获取用户控件 name = ed_username.getText().toString(); //获取控件里面的值 ed_password = findViewById(R.id.ed_password); password = ed_password.getText().toString(); /*if (name=="" || password=="") { Toast.makeText(getApplicationContext(),"用户名或密码为空",Toast.LENGTH_SHORT).show(); return; }*/ new Thread() { @Override public void run() { int num= login("langxing","123456"); if(num>0){ //判断id是否大于1，>1就是查询到有数据 ，可以进入主界面 Intent it=new Intent(LogActivity.this,MainActivity.class); it.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP); startActivity(it); }else { runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(getApplicationContext(),"用户名或密码错误",Toast.LENGTH_SHORT).show(); } }); } } }.start(); } }); } //json格式与服务端交互 private int login(String name,String password){ //使用okhtttp连接服务器 //urlPath = "http://10.0.2.2:8080/emp_ssm/user/addUser.action?name="+name+"&"+"password="+password; urlPath = "http://192.168.1.117:8080/emp_ssm/user/addUser.action"; try { //1,找水源--创建URL URL url = new URL(urlPath);//放网站 //2,开水闸--openConnection HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); //3，建管道--InputStream InputStream inputStream = httpURLConnection.getInputStream(); //4，建蓄水池蓄水-InputStreamReader InputStreamReader reader = new InputStreamReader(inputStream, "UTF-8"); //5，水桶盛水--BufferedReader BufferedReader bufferedReader = new BufferedReader(reader); StringBuffer buffer = new StringBuffer(); String temp = null; while ((temp = bufferedReader.readLine()) != null) { //取水--如果不为空就一直取 buffer.append(temp); } bufferedReader.close();//记得关闭 reader.close(); inputStream.close(); Log.e("MAIN", buffer.toString());//打印结果 } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return 1; }}服务器端SpringMVC中userController.java 配置信息（仅仅用于测试）：
package com.zhiyou100.controller;import javax.enterprise.inject.Model;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.omg.CORBA.Request;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import com.zhiyou100.pojo.User;import com.zhiyou100.service.UserService;@Controller@RequestMapping("/user")public class UserController {@Autowiredprivate UserService userService; @RequestMapping(value="/addUser", method={RequestMethod.POST,RequestMethod.GET}) @ResponseBody public User addUserFromClient(HttpServletRequest request){ String userName=request.getParameter("name"); String password=request.getParameter("password"); User user = new User(); user.setName(userName); user.setPassword(password); System.out.println(user.getName()+" hahahhhhh "+user.getPassword()); return user; }}更多相关文章
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