java 汉字乱码问题解决方法

java 汉字乱码问题解决方法
下面关于网页特效phttp://www.111cn.net/网页特效p.html target=_blank >jsp教程汉字乱码问题我们是做了一个过滤器，然后到web中配置一下，这样很好的解决了jsp中汉字编码问题哦。
*/

public class characterfilter implements filter {

public void destroy() {

}

public void dofilter(servletrequest request, servletresponse response,
filterchain filter) throws ioexception, servletexception {

request.setcharacterencoding("utf-8");
response.setcharacterencoding("utf-8");
filter.dofilter(request, response);
}

public void init(filterconfig arg0) throws servletexception {

}

}

%>
再到 web配置中www.111cn.net

<filter>
<filter-name>characterfilter</filter-name>
<filter-class>org.shopping.uitl.characterfilter</filter-class>
</filter>

再来看一下官方的对汉字乱码处理方法吧。mb.111cn.net

<%
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;
/**
 * 过滤器，设置文字编码格式
 */
public class setcharacterencodingfilter implements filter {

    protected string encoding = null;

    protected filterconfig filterconfig = null;

    protected boolean ignore = true;

    public void destroy() {

        this.encoding = null;
        this.filterconfig = null;

    }

    public void dofilter(servletrequest request, servletresponse response,
                         filterchain chain)
    throws ioexception, servletexception {

        if (ignore || (request.getcharacterencoding() == null)) {
            string encoding = selectencoding(request);
            if (encoding != null)
                request.setcharacterencoding(encoding);
        }

        chain.dofilter(request, response);

    }

    public void init(filterconfig filterconfig) throws servletexception {

    this.filterconfig = filterconfig;
        this.encoding = filterconfig.getinitparameter("encoding");
        string value = filterconfig.getinitparameter("ignore");
        if (value == null)
            this.ignore = true;
        else if (value.equalsignorecase("true"))
            this.ignore = true;
        else if (value.equalsignorecase("yes"))
            this.ignore = true;
        else
            this.ignore = false;

    }

    protected string selectencoding(servletrequest request) {

        return (this.encoding);

    }

}

%>

过滤器在xml中的配置：

xml code
    <filter>
        <filter-name>setcharacterencodingfilter</filter-name>
        <filter-class>
            包名.setcharacterencodingfilter
        </filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>setcharacterencodingfilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>