public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
if (req.getHeader("X-Requested-With") != null && req.getHeader("X-Requested-With").equalsIgnoreCase("XMLHttpRequest")) {
request.setCharacterEncoding("utf-8");
} else {
request.setCharacterEncoding("gbk");
}
chain.doFilter(request, response);
}
jQuery在使用ajax的时候会在header中加入X-Requested-With,值为:XMLHttpRequest,filter中判断是jQuery的ajax请求时就把字符编码设为utf8,这样可以解决post提交中的中文乱码问题,不需要在代码中设置request.setCharacterEncoding("UTF-8");
对于get方式的中文乱码问题,建议不使用get方式提交中文,统统改为post ^-^
为了和prototype.js处理中文的方式一致,可以使用如下的方式,自定义header中的属性RequestType
复制代码 代码如下:
$.ajax({
url: "3.jsp",
type: "post",
data: {name:"中文"},
beforeSend: function(XMLHttpRequest){
XMLHttpRequest.setRequestHeader("RequestType", "ajax");
alert("开始");
},
success: function(data, textStatus){
alert(data);
},
error: function(XMLHttpRequest, textStatus, errorThrown){
alert("错误:" + textStatus);
},
complete: function(XMLHttpRequest, textStatus){
alert("完成:" + textStatus);
}
});
filter代码如下:
复制代码 代码如下:
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
if (req.getHeader("RequestType") != null && req.getHeader("RequestType").equalsIgnoreCase("ajax"))) {
request.setCharacterEncoding("utf-8");
} else {
request.setCharacterEncoding("gbk");
}
chain.doFilter(request, response);
}
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