首先对于源jsp网站和servlet里面的字符集要一样,一般支持中文的字符集为UTF-8最好采用这个字符集(除此之外还有gb2312);
对于源jsp文件的代码中需要设置
设置你的page里面的字符集
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
设置html文件里面的字符集
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
如果对于参数通过get方法进行传参的话,有两种方法:
方法一:
在tomcat里面设置字符集为UTF-8
修改server.xml
<Connector port="80" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" URIEncoding="utf-8"/>
* 必须有修改tomcat服务器配置文件权限
方法二:通过对servlet里面的进行设置:
response.setHeader("Content-Type", "text/html;charset=UTF-8");//设置UTF-8的显示页面的类型和字符集
username = new String(username.getBytes("ISO8859-1"),"utf-8");//根据你的tomcat里面的字符集进行对中文进行转换,将iso转换为UTF-8
如果对于参数通过post方法进行传参的话,则设置为:
response.setHeader("Content-Type", "text/html;charset=UTF-8");//设置UTF-8的显示页面的类型和字符集
request.setCharacterEncoding("utf-8"); //设置通过post方法进行传参的字符集
在这里需要注意的是:
1.对于post和get传参的时候解决中文乱码问题的时候一定要分清楚是哪种方式传参,是post就得用post不然会没用的
2.对于两种不同的地方不能合用,乱码问题解决不了的。
下面附上一个例子:
get.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="servlet/test" method="get">
<input type="text" name="getV">
<button type="submit">测试get请求</button>
</form>
</body>
</body>
</html>
post.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="servlet/test" method="post">
<input type="text" name="postV">
<button type="submit">测试post请求</button>
</form>
</body>
</html>
test.java
package testcharset; 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 test extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setHeader("Content-Type", "text/html;charset=UTF-8");//设置UTF-8的显示页面的类型和字符集
PrintWriter out=response.getWriter();
try {
String username=request.getParameter("getV");
username = new String(username.getBytes("ISO8859-1"),"utf-8");//根据你的tomcat里面的字符集进行对中文进行转换,将iso转换为UTF-8
out.print("获取的get请求:");
out.print(username);
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}finally{
try {
out.close();
} catch (Exception e2) {
e2.printStackTrace();
// TODO: handle exception
}
}
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setHeader("Content-Type", "text/html;charset=UTF-8");//设置UTF-8的显示页面的类型和字符集
request.setCharacterEncoding("utf-8"); //设置通过post方法进行传参的字符集
PrintWriter out=response.getWriter();
try {
out.print("获取的Post请求:");
out.print(request.getParameter("postV"));
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}finally{
try {
out.close();
} catch (Exception e2) {
e2.printStackTrace();
// TODO: handle exception
}
}
} }