HTTP码流与Jsp乱码问题的分析（二）
上一节我是用的GB2312编码方式的页面来测试的，这一节我用UTF-8页面来测试一下。
问题一
问题出现时环境：
1、以POST方式提交表单
2、请求的URL后还附加参数且参数值含有中文
3、附加参数值经过了encodeURIComponent()函数编码
4、Tomcat未设置URIEncoding与useBodyEncodingForURI
5、请求页面与结果页面<%@ page %>指令的contentType与pageEncoding编码方式都为UTF-8
6、结果页面中request的编码方式为UTF-8
请求utf-8.jsp与响应页面utf-8rs.jsp代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<body>
<form name=form1 action="" method="post">
<input type="text" name="textParam1" size="50 px" value="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./">
<br>
<input type="file" name="fileParam" size="50 px" value="">
<br>
<input type="button" value="submit" onclick="submitForm()">
</form>
<script type="text/javascript">
function submitForm(){
var str ="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./";
form1.action = "utf-8rs.jsp?qryParam1=" + encodeURIComponent(str) + "&qryParam2="+ encodeURIComponent(form1.textParam1.value) ;
//form1.action = "http://localhost:8088/utf-8rs.jsp?qryParam1=" + encodeURIComponent(str) + "&qryParam2="+ encodeURIComponent(form1.textParam1.value) ;
form1.submit();
}
</script>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
//这里一定要设置，且与浏览的提交时编码方式一样，否则乱码（默认Tomcat以iso8859-1解码）
//且只能post提交方式的参数起使用，对URL后附带参数不起作用
request.setCharacterEncoding("UTF-8");
String textParam1 = request.getParameter("textParam1");
String qryParam1 = request.getParameter("qryParam1");
System.out.println("textParam1=" + textParam1);
System.out.println("qryParam1=" + qryParam1);
System.out.println("qryParam1=" + (qryParam1==null?null:new String(qryParam1.getBytes("iso8859-1"),"utf-8")));
%>
request.getParameter("textParam1")(<font color=red>UTF-8编码->UTF-8解码</font>)：<br>
<%=request.getParameter("textParam1")%>
<br><hr>
request.getParameter("qryParam1")(<font color=red>UTF-8编码->ISO8859-1解码</font>)：<br>
<%=qryParam1%>
<br><hr>
new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")(<font color=red>UTF-8编码->ISO8859-1解码->ISO8859-1编码->UTF-8解码</font>)：<br>
<%=new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")%>
</body>
</html>
提交时地址栏显示：
http://localhost:8080/HttpStream/utf-8rs.jsp?qryParam1=%E4%B8%ADa%20~!%40%23%24%25%5E%26*()_%2B%7B%7D%7C%3A%22%20%3C%3E%3F%60-%3D%5B%5D%5C%3B'%2C.%2F&qryParam2=%E4%B8%ADa%20~!%40%23%24%25%5E%26*()_%2B%7B%7D%7C%3A%5C%22%20%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B'%2C.%2F
码流：
| POST /utf-8rs.jsp?qryParam1=%E4%B8%ADa%20~!%40%23%24%25%5E%26*()_%2B%7B%7D%7C%3A%22%20%3C%3E%3F%60-%3D%5B%5D%5C%3B'%2C.%2F&qryParam2=%E4%B8%ADa%20~!%40%23%24%25%5E%26*()_%2B%7B%7D%7C%3A%5C%22%20%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B'%2C.%2F HTTP/1.1
textParam1=%E4%B8%ADa+%7E%21@%23%24%25%5E%26*%28%29_%2B%7B%7D%7C%3A%5C%22+%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B%27%2C.%2F&fileParam= |
运行结果：
问题二
问题出现时环境：
1、以POST方式提交表单
2、请求的URL后还附加参数且参数值含有中文
3、附加参数值没有经过encodeURIComponent()函数编码
4、Tomcat未设置URIEncoding与useBodyEncodingForURI
5、请求页面与结果页面<%@ page %>指令的contentType与pageEncoding编码方式都为UTF-8
6、结果页面中request的编码方式为UTF-8
请求utf-8.jsp与响应页面utf-8rs.jsp代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<body>
<form name=form1 action="" method="post">
<input type="text" name="textParam1" size="50 px" value="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./">
<br>
<input type="file" name="fileParam" size="50 px" value="">
<br>
<input type="button" value="submit" onclick="submitForm()">
</form>
<script type="text/javascript">
function submitForm(){
var str ="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./";
form1.action = "utf-8rs.jsp?qryParam1=" + (str) + "&qryParam2="+ (form1.textParam1.value) ;
//form1.action = "http://localhost:8088/utf-8rs.jsp?qryParam1=" + (str) + "&qryParam2="+ (form1.textParam1.value) ;
form1.submit();
}
</script>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
//这里一定要设置，且与浏览的提交时编码方式一样，否则乱码（默认Tomcat以iso8859-1解码）
//且只能post提交方式的参数起使用，对URL后附带参数不起作用
request.setCharacterEncoding("UTF-8");
String textParam1 = request.getParameter("textParam1");
String qryParam1 = request.getParameter("qryParam1");
System.out.println("textParam1=" + textParam1);
System.out.println("qryParam1=" + qryParam1);
System.out.println("qryParam1=" + (qryParam1==null?null:new String(qryParam1.getBytes("iso8859-1"),"utf-8")));
%>
request.getParameter("textParam1")(<font color=red>UTF-8编码->UTF-8解码</font>)：<br>
<%=request.getParameter("textParam1")%>
<br><hr>
request.getParameter("qryParam1")(<font color=red>UTF-8编码->ISO8859-1解码</font>)：<br>
<%=qryParam1%>
<br><hr>
new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")(<font color=red>UTF-8编码->ISO8859-1解码->ISO8859-1编码->UTF-8解码</font>)：<br>
<%=new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")%>
</body>
</html>
提交时地址栏显示：
http://localhost:8080/HttpStream/utf-8rs.jsp?qryParam1=中a%20~!@#$%^&*()_+{}|:"%20<>?`-=[]\;',./&qryParam2=中a%20~!@#$%^&*()_+{}|:\"%20<>?`-=[]\\;',./
码流：
| POST /utf-8rs.jsp?qryParam1=中a%20~!@ HTTP/1.1
textParam1=%E4%B8%ADa+%7E%21@%23%24%25%5E%26*%28%29_%2B%7B%7D%7C%3A%5C%22+%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B%27%2C.%2F&fileParam= |
运行结果：
问题三
问题出现时环境：
1、以get方式提交表单
2、表单输入框中含有中文
3、Tomcat未设置URIEncoding与useBodyEncodingForURI
4、请求页面与结果页面<%@ page %>指令的contentType与pageEncoding编码方式都为UTF-8
5、结果页面中request的编码方式为UTF-8
请求utf-8.jsp与响应页面utf-8rs.jsp代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<body>
<form name=form1 action="" method="get">
<input type="text" name="textParam1" size="50 px" value="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./">
<br>
<input type="file" name="fileParam" size="50 px" value="">
<br>
<input type="button" value="submit" onclick="submitForm()">
</form>
<script type="text/javascript">
function submitForm(){
var str ="中a ~!@#$%^&*()_+{}|:\" <>?`-=[]\\;',./";
form1.action = "utf-8rs.jsp?qryParam1=" + encodeURIComponent(str) + "&qryParam2="+ encodeURIComponent(form1.textParam1.value) ;
//form1.action = "http://localhost:8088/utf-8rs.jsp?qryParam1=" + encodeURIComponent(str) + "&qryParam2="+ encodeURIComponent(form1.textParam1.value) ;
form1.submit();
}
</script>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<%
//这里一定要设置，且与浏览的提交时编码方式一样，否则乱码（默认Tomcat以iso8859-1解码）
//且只能post提交方式的参数起使用，对URL后附带参数不起作用
request.setCharacterEncoding("UTF-8");
String textParam1 = request.getParameter("textParam1");
String qryParam1 = request.getParameter("qryParam1");
System.out.println("textParam1=" + textParam1);
System.out.println("qryParam1=" + qryParam1);
System.out.println("qryParam1=" + (qryParam1==null?null:new String(qryParam1.getBytes("iso8859-1"),"utf-8")));
%>
request.getParameter("textParam1")(<font color=red>UTF-8编码->UTF-8解码</font>)：<br>
<%=request.getParameter("textParam1")%>
<br><hr>
request.getParameter("qryParam1")(<font color=red>UTF-8编码->ISO8859-1解码</font>)：<br>
<%=qryParam1%>
<br><hr>
new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")(<font color=red>UTF-8编码->ISO8859-1解码->ISO8859-1编码->UTF-8解码</font>)：<br>
<%=new String(request.getParameter("qryParam1").getBytes("iso8859-1"),"UTF-8")%>
</body>
</html>
提交时地址栏显示：
http://localhost:8080/HttpStream/utf-8rs.jsp?textParam1=%E4%B8%ADa+%7E%21@%23%24%25%5E%26*%28%29_%2B%7B%7D%7C%3A%5C%22+%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B%27%2C.%2F&fileParam=
码流：
| GET /utf-8rs.jsp?textParam1=%E4%B8%ADa+%7E%21@%23%24%25%5E%26*%28%29_%2B%7B%7D%7C%3A%5C%22+%3C%3E%3F%60-%3D%5B%5D%5C%5C%3B%27%2C.%2F&fileParam= HTTP/1.1
|
