解决struts1中文乱码有关问题

解决struts1中文乱码问题

最近工作中遇到一些中文乱码的问题，其中包括在struts1框架下，通过form的打拼的属性值，如果为中文的话，在Action中得到值全部为“？”

网上找了一些解决的方法，主要有两种，一是添加过滤器，二是重写 RequestProcessor。两种方法在我的系统中只有前者试验成功了，现在把这个解决方案分享一下，也算备份一下！

首先，定义一个过滤器 SetCharacerEncodingFilter.java

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.FilterChain;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;

public class SetCharacterEncodingFilter extends HttpServlet implements Filter {

    protected String encoding = null;
    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#destroy()
     */
    @Override
    public void destroy() {

        this.encoding = null;
        this.filterConfig = null;

    }

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
     *      javax.servlet.ServletResponse, javax.servlet.FilterChain)
     */
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        MyRequest req = new MyRequest((HttpServletRequest) request, this.encoding);
        chain.doFilter(req, response);
    }

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
     */
    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);

    }
}

然后，再定义一个代理请求MyRequest.java，这是关键，这个类来处理数据的编码方式的转换

new String(input.getBytes("ISO-8859-1"), "UTF-8");

import java.io.UnsupportedEncodingException;
import javax.servlet.http.HttpServletRequest;

public class MyRequest extends javax.servlet.http.HttpServletRequestWrapper {

    HttpServletRequest request;
    String formate;

    public MyRequest(HttpServletRequest request, String format) {
        super(request);
        this.request = request;
        this.format = format;
    }

    @Override
    public String[] getParameterValues(String name) {
        String strs[] = super.getParameterValues(name);
        for (int i = 0; i < strs.length; i++) {
            strs[i] = this.myEncoding(strs[i]);
        }
        return strs;
    }


    private String myEncoding(String input) {
        String output = "";
        try {
            output = new String(input.getBytes("ISO-8859-1"), this.format); 
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return output;
    }
}

最后再把这个过滤器配置到web.xml中去。

<filter>
        <filter-name>Encoding</filter-name>
        <filter-class>
			com.asus.hzia.pms.server.SetCharacterEncodingFilter
        </filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>Encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

解决struts1中文乱码有关问题

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