Home Database Mysql Tutorial 关于JSP中文问题的解决方法_MySQL

关于JSP中文问题的解决方法_MySQL

Jun 01, 2016 pm 02:09 PM
charset string Chinese about method solve question

在jsp中,中文乱码常会让人心乱如麻。
  对于中文处理的常见对策,在网上经常可见的主要是下面2种:

<%@ page
contentType="text/html;charset=gb2312" %>  

  或者:

<%
String Hi="你好";
byte[]
tmpbyte=Hi.getBytes("ISO8859_1");
Hi=new
String(tmpbyte);
out.print(Hi);
%>  

  虚拟小龙亭也主要采用了上面2种方法进行了修改,从而变成了1.1版。

  通过简单总结,示例中的中文处理发生于以下几个地方:

  1 在url附带中文参数,可以直接读取。


  例如:

<%= request.getParameter("showword")%>  


  2 与数据库有关的各种sql操作

  这里使用的Access没有发生问题。


  3 读取HTML

  form表单中递交的中文值

  在jswdk中需要加以编码,较为简洁的写法如:


String name1=new
String(request.getParameter("user_id").getBytes("ISO8859_1"));  

  另外,在jdk1.3的支持下,不需要加入

<%@
page contentType="text/html;charset=gb2312"
%>  

  而在jdk1.2.2下面,即使2种方法同时运用也很不稳定。

  而在resin平台,情况较好。只要在页面第一行加入:

<%@
page contentType="text/html;charset=gb2312"
%>

  即可正确处理中文。

  如果再加编码则反而不对。

  5 session中包含的中文

  在jswdk中,奇怪的是如果从form中读出的值经过编码则可正确显示;
但直接赋予中文值则不行。
  resin平台很好,同上。

  6 对于对变量赋中文值后正确显示中文。

  例如以下程序:

<%@ page contentType="text/html;charset=gb2312"
%>
<html><head></head><body>
<%
String
Hi="你好";
byte[] tmpbyte=Hi.getBytes("ISO8859_1");
Hi=new
String(tmpbyte);
out.print(Hi);
%>
</body></html>  

  同样是jswdk1.0.1,以上的表示方法在jdk1.2.2中没有问题,但在jdk1.3下却无法显示。

  resin平台很好,同上,经过测试,只需要在<head>中补上

<meta
http-equiv="Content-Type" content="text/html;
charset=gb2312">
而不需要<%@ page
contentType="text/html;charset=gb2312" %>也能正确显示中文。

  体会:

  jswdk也许只能用于普通开发,稳定性和其它问题可能不如商业软件。
由于jdk1.3版性能要好于jdk1.2.2很多倍,并且对中文的支持也较好,所以应该加以采用。

  作为免费的商业软件,resin不仅速度快,稳定,自动编译,可指出出错行,可在服务器端支持使用javascript等,而且,至少我觉得对中文的支持很好。

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