package com.hxzk.util;
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import javax.servlet.*;
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import javax.servlet.annotation.WebFilter;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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@WebFilter("/*") // 如果使用注解配置过滤器，可以添加这行注解，去掉在 web.xml 中的配置
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public class EncodingFilter implements Filter {
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private String encoding;
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@Override
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public void init(FilterConfig filterConfig) throws ServletException {
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encoding = filterConfig.getInitParameter("encoding");
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}
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@Override
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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
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request.setCharacterEncoding(encoding);
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response.setCharacterEncoding(encoding);
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HttpServletResponse httpResponse = (HttpServletResponse) response;
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httpResponse.setHeader("Access-Control-Allow-Origin", "*");
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httpResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS");
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httpResponse.setHeader("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");
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chain.doFilter(request, response);
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}
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@Override
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public void destroy() {
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}
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}
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