servlet中参数的传递及如何防止出现中文乱码

info.html

<%@ page language="java" contentType="text/html; charset=GBK"
	pageEncoding="GBK"%>
<!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>Just a test</title>
</head>
<body>
	<form method="get" action="getinfo">
		<table>
			<tr>
				<td>username:</td>
				<td><input type="text" name="username"></td>
			</tr>
			<tr>
				<td>password：</td>
				<td><input type="password" name="password"></td>
			</tr>
			<tr>
				<td><input type="submit" value="确认"></td>
			</tr>
		</table>
	</form>
</body>
</html>

info.java

package ig.sd.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Info extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	@Override
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		System.out.println("doget");
		String username = request.getParameter("username");
		PrintWriter writer = response.getWriter();
		writer.write(username);
	}

	public void service(HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {
		String username = request.getParameter("username");
		PrintWriter writer = response.getWriter();
		writer.write(username);
		System.out.println("service");
		super.service(request, response);
	}
}

web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
    <servlet>
    <servlet-name>info</servlet-name>
    <servlet-class>ig.sd.servlet.Info</servlet-class>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>info</servlet-name>
    <url-pattern>/getinfo</url-pattern>
  </servlet-mapping>
</web-app>

其中防止中文乱码的方式如下：

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本文链接：https://www.cnblogs.com/javaTest/archive/2012/07/07/2589503.html