A method to solve the garbled problem of Java EE _java

Garbled is a more common problem in the Java EE. If you encounter one or two problems, you can use the new String (Request.getparameter (XXX). GetBytes ("Iso-8859-1"), "UTF-8") to resolve. When you encounter many situations, it is best to use a filter.
The filter only needs to notice 2 places--Class and Web.xml
1. The publication of the above Web.xml is as follows:

<fileter> 
  <!--class name--> 
  <filter-name>SetCharsetEncodingFilter</filter-name> 
  <!---Class path--> 
  <filter-class>SetCharacter</filter-class> 
  <init-param> 
    < param-name>encoding</param-name> 
    <param-value>utf-8</param-value> 
  </ init-param> 
  <filter-mapping> 
    <filter-name>setcharsetencodingfilter</filter-name > 
    <!--setup All files encountered filters must be intercepted--> 
    <url-pattern>/*</url-pattern> 
  </ Filter-mapping> 
</fileter> 

2. Filtration Class

Import java.io.IOException; 
Import Javax.servlet.Filter; 
Import Javax.servlet.FilterChain; 
Import Javax.servlet.FilterConfig; 
Import javax.servlet.ServletException; 
Import Javax.servlet.ServletRequest; 
 
Import Javax.servlet.ServletResponse; 
  public class Setcharacter implements Filter {protected String encoding = NULL; 
  protected Filterconfig filterconfig = null; 
  Protected Boolean ignore = true; 
    public void init (Filterconfig arg0) throws servletexception {this.encoding = Arg0.getinitparameter ("encoding"); 
    String value = Arg0.getinitparameter ("Imnore"); 
    if (value = = null) {This.ignore = true; 
    else if (Value.equalsignorecase ("true") {This.ignore = true; 
    else if (value.equalsignorecase ("yes")) {This.ignore = true; } public void Dofilter (ServletRequest arg0, Servletresponse arg1, Filterchain arg2) throws IOException, S ervletexception {if (Ignore | | (arg0.getcharacterencoding () = null)) {String encoding = selectencoding (arg0); 
    if (encoding!= NULL) arg0.setcharacterencoding (encoding); 
  } arg2.dofilter (arg0, arg1); 
  Private String selectencoding (ServletRequest arg0) {return (this.encoding); 
    public void Destroy () {this.encoding = null; 
  This.filterconfig = null; } 
 
}

In the Web.xml file, the following syntax is used to define mappings:
1, the "/" at the beginning and the "/*" End is used to do path mapping.
2, before the prefix "*." The beginning is used to do extension mapping.
3, with "/" is used to define the default servlet mapping.
4, the rest is used to define detailed mapping. For example:/aa/bb/cc.action

The above is to solve the Java EE garbled problem of ideas, to share with everyone, I hope that you encounter similar problems can be successfully resolved.