jQuery ajax亂碼問題解決
一、測試環境
jQuery:1.3.2
tomcat:5.5.17
二、測試方法
1.使用get方式
伺服器端代碼:
String name = new String(request.getParameter("name").getBytes("iso8859-1"),"utf-8");
用戶端js代碼:
<1>$.ajax({url: "2.jsp",type: "get",data: {name:"中文"},success: function(response){
alert(response);
}});
結果:正確顯示
<2>$.ajax({url: "2.jsp",type: "get",data: "name=中文",success: function(response){
alert(response);
}});
結果:亂碼
<3>$.get("2.jsp", { name: "中文" },function(response){
alert(response);
});
結果:正確顯示
<4>$.get("2.jsp", "name=中文",function(response){
alert(response);
});
結果:亂碼
2.post方式
伺服器端代碼:
request.setCharacterEncoding("UTF-8");
String name = request.getParameter("name");
用戶端js代碼:
<1>$.ajax({url: "3.jsp",type: "post",data: "method=testAjaxPost&name=中文",success: function(response){
alert(response);
}});
結果:正確顯示
<2>$.ajax({url: "3.jsp",type: "post",data: {name:"中文"},success: function(response){
alert(response);
}});
結果:正確顯示
<3>$.post("3.jsp", { name: "中文" },function(response){
alert(response);
});
結果:正確顯示
<4>$.post("3.jsp", "name=中文",function(response){
alert(response);
});
結果:正確顯示
三、使用filter
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的時候會在header中加入X-Requested-With,值為:XMLHttpRequest,filter中判斷是jQuery的ajax請求時就把字元編碼設為utf8,這樣可以解決post提交中的中文亂碼問題,不需要在代碼中設定request.setCharacterEncoding("UTF-8");
對於get方式的中文亂碼問題,建議不使用get方式提交中文,統統改為post ^-^
為了和prototype.js處理中文的方式一致,可以使用如下的方式,自訂header中的屬性RequestType$.ajax({
url: "3.jsp",
type: "post",
data: {name:"中文"},
beforeSend: function(XMLHttpRequest){
XMLHttpRequest.setRequestHeader("RequestType", "ajax");
alert("開始");
},
success: function(data, textStatus){
alert(data);
},
error: function(XMLHttpRequest, textStatus, errorThrown){
alert("錯誤:" + textStatus);
},
complete: function(XMLHttpRequest, textStatus){
alert("完成:" + textStatus);
}
});
filter代碼如下:
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);
}