jsp之间传值乱码问题

来源：互联网发布：广州php招聘编辑：程序博客网时间：2024/05/01 17:22

tree.jsp页面：

function myreset(){   var node = zTree.getSelectedNodes()[0];   $.ajax({      type: "GET",      url:"upd.jsp",      data: "treeId=" +node.id+"&nodeName="+node.name,         dataType: "text",      success: function(data){     hideRMenu();    } });}

upd.jsp 页面：

<%@ page contentType="text/html; charset=UTF-8" %><%@ page language="java" import="java.util.*, java.sql.*" pageEncoding="utf-8"%><%   //连接MySQL数据库        Connection conn = com.zy.test.pojo.Node.getConn();    Statement st = conn.createStatement();     String idno=request.getParameter("treeId");    //中文乱码解决    String name = new String(request.getParameter("nodeName").getBytes("ISO-8859-1"),"UTF-8");    //修改节点名字String sql="update menu set name=? where id=?";ResultSet rs = null;PreparedStatement pstmt = null;try{pstmt = conn.prepareStatement(sql);pstmt.setString(1, name);pstmt.setString(2, idno);        pstmt.executeUpdate();        conn.commit();}catch (SQLException e) {e.printStackTrace();} com.zy.test.pojo.Node.closeAll(rs, pstmt, conn); %>

结果在servlet页面中打印是问号，网上查这边是乱码。

解决方法如下：

function myreset(){var node = zTree.getSelectedNodes()[0];<span style="color:#ff0000;"><strong>var name_ = node.name;</strong></span>$.ajax({ type: "POST",url:"upd.jsp",data: "treeId=" +node.id+"&nodeName="+name_,contentType: "application/x-www-form-urlencoded; charset=utf-8",         dataType: "text",success: function(data){hideRMenu(); }});}

upd.jsp 改为如下：

<%@ page contentType="text/html; charset=UTF-8" %><%@ page language="java" import="java.util.*, java.sql.*" pageEncoding="utf-8"%><%   //连接MySQL数据库        Connection conn = com.zy.test.pojo.Node.getConn();    Statement st = conn.createStatement();     String idno=request.getParameter("treeId");    request.setCharacterEncoding("UTF-8");    //中文乱码解决    //String name = new String(request.getParameter("nodeName").getBytes("ISO-8859-1"),"UTF-8");    String name = request.getParameter("nodeName");    //修改节点名字String sql="update menu set name=? where id=?";ResultSet rs = null;PreparedStatement pstmt = null;try{pstmt = conn.prepareStatement(sql);pstmt.setString(1, name);pstmt.setString(2, idno);        pstmt.executeUpdate();        conn.commit();}catch (SQLException e) {e.printStackTrace();} com.zy.test.pojo.Node.closeAll(rs, pstmt, conn); %>

该了三点：

1、get改为post

2、增加contentType: "application/x-www-form-urlencoded; charset=utf-8", 代码段

3、servlet中去掉String name = new String(request.getParameter("nodeName").getBytes("ISO-8859-1"),"UTF-8")改为request.setCharacterEncoding("UTF-8");

4、容易忽略的一点，js中直接把name获取出来，然后在赋值，而不是直接取数，标红的部分

问题解决。

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