http傳遞引數資訊和傳遞方式post、get
阿新 • • 發佈：2019-01-09
注：本文為慕課網課程知識整理
step 1：
1.開啟Java EE eclipse
2.Window > Preferences > Server > Runtime Environment >Add > 選擇Apache Tomcat（任意版本）>Next > directory的檔案地址修改為Tomcat的本地地址（需提前下載好Tomcat）>finish
//建立一個web
3.new > Dynamic Web Project > 取名為 web 即可 > next > next > 勾選“Generate web.xml deployment descriptor”> finish
//建立一個頁面
4.右鍵單擊web建立一個JSP File，取名為 index
//建立一個sevrlet
5.右鍵單擊web建立一個Servlet，取名為 index
Java package : com.imooc.servlet
class name:MyServlet
6.重寫MyServlet的doGet（）及doPost（）方法
具體程式碼如下：
package com.imooc.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import 修改index頁面，修改body標籤內的具體程式碼如下：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="MyServlet" method="get">
name:<input type="text" name="name"><br>
age:<input type="text" name="age"><br>
sumbit:<input type="submit" value ="submit"><br>
</form>
</body>
</html>WebContent > WEB-INF > web.xml（如果沒有這個檔案，大概是少了步驟3的勾選）如果該檔案不完整，需補充。（正常情況下，會自動補全，實現對映），具體程式碼如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>web</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>MyServlet</display-name>
<servlet-name>MyServlet</servlet-name>
<servlet-class>com.ilove.servlet.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>
</web-app>Andriod程式程式碼如下
public class MainActivity extends AppCompatActivity {
EditText age;
EditText name;
Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
age = (EditText)findViewById(R.id.age) ;
name = (EditText)findViewById(R.id.name);
button = (Button)findViewById(R.id.button);
}
public void register(View view) {
String url ="http://192.168.31.108:8080/web/MyServlet";
/*
Java EE執行的網頁上可看到網址（當name為jian且age為23時）為：http://localhost:8080/web/MyServlet?name=jian&age=23
需要將localhost修改具體ip地址，否知手機無法識別。
192.168.31.108為電腦ip地址，可在cmd輸入ip config 獲取 ip地址
*/
new HttpThread(url,name.getText().toString(),age.getText().toString()).start();
}
}
---------------------------------------
public class HttpThread extends Thread {
String url;
String name;
String age;
public HttpThread(String url, String name, String age) {
this.url = url;
this.name = name;
this.age = age;
}
private void doGet() {
url = url + "?name=" + name + "&age=" + age;
try {
URL httpUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();
conn.setRequestMethod("GET");
conn.setReadTimeout(5000);
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String str;
StringBuffer sb = new StringBuffer();
while ((str = reader.readLine()) != null) {
sb.append(str);
}
Log.v("伺服器返回內容",sb.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
doGet();
}
}執行java EE上的web（run on Server，啟動伺服器），確保在同一WiFi，可在Console看到在手機端輸入的引數（name 及 age）。