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一、项目中使用ajaxupload.js插件上传图片，返回值不正确
<head><title>对不起，系统故障，您访问的页面暂时无法访问!</title></head>
返回的是error404.jsp页面
二，看web.xml中配置
<error-page>
<error-code>404</error-code>
<location>/jsp_lib/common/error404.jsp</location>
</error-page>
应该是请求路径错误。发现请求路径就是不正确http://192.168.6.24:9990/cloud/file/fileup.do?actionType=ajaxremove&filePath=&ranNum=0.09392175101675093&ranNum=0.4666899552
路径中多了/cloud what? why? 读源代码（RTFSC）
三、看其实现逻辑
var ajaxChosePic = function(inputName,widthStr,heightStr,fileSize){
var oldPicPath = document.getElementsByName(inputName+"OldRealPath")[0].value;
var picwh = document.getElementsByName(inputName+"wh")[0].value;
var isEdit = document.getElementsByName(inputName+"editUrl")[0].value;
if(oldPicPath != '' && oldPicPath != ' ' && oldPicPath != null && oldPicPath != 'null' && "true" == isEdit){
var picWidth = "0";
var picHeight = "0";
if(picwh != '' && picwh != ' '){
var wh = picwh.split(',');
if(wh != null && wh.length >0){
picWidth = wh[0];
picHeight = wh[1];
}
}
initPic(inputName,oldPicPath,picWidth,picHeight);
}
new AjaxUpload(inputName+"InputFile",{
action:contentPath+"/file/fileup.do?actionType=upload&fileSize="+fileSize+"&ranNum="+Math.random(),
autoSubmit:true,
name:inputName,
onSubmit:function(file,extension){
if (extension && /^(pdf|jpg|png|jpeg|gif|PDF|JPG|PNG|JPEG|GIF)$/.test(extension)){
hideFileUp(inputName+"a");
showFileUp(inputName+"adiv")
document.getElementById(inputName+"Preview").style.background = "url("+contentPath + "/img/fileUpload/tpwait.gif) center center no-repeat";
} else {
//$("#loading").html("你所选择的文件不受系统支持");
//$("#loading").show();
alert("你所选择的文件不受系统支持")
return false;
}
},
onComplete: function(file,response){
var dataobj=eval("(" + response + ")");
var errorMessage = dataobj.rsp.errorMessage;
if(errorMessage != '' && errorMessage != ' '){
showFileUp(inputName + "a");
hideFileUp(inputName + "adiv");
alert("文件上传失败,文件大小最大可传"+fileSize + "M");
document.getElementById(inputName+"Preview").innerHTML="";
document.getElementById(inputName+"Preview").style.background = "url("+contentPath + "/img/fileUpload/zwtp.png) center center no-repeat";
document.getElementsByName(inputName+"FileUrl")[0].value="";
document.getElementById(inputName+"Preview").setAttribute("onmouSEOver","");
document.getElementById(inputName+"Preview").setAttribute("onmouSEOut","");
}else{
var fileUrl = dataobj.rsp.fileUrl;
var realPath = dataobj.rsp.realPath;
var img = new Image();//构造JS的Image对象
img.src = fileUrl;//将本地图片赋给image对象
setTimeout(function(){
initPic(inputName,fileUrl,img.width,img.height);
document.getElementsByName(inputName+"editUrl")[0].value="false";
document.getElementsByName(inputName+"FileUrl")[0].value=realPath;
},500);
}
}
});
};
其中contentPath就是获取的路径，看其实现
var contentPath = getContextPath();
//获取访问路径
function getContextPath(){
var contextPath = window.location.protocol + "//" + window.location.host;
var content = document.location.pathname;
if(isStartWith(content,"/store/") || isStartWith(content,"/fg/") || isStartWith(content,"/bg/") || isStartWith(content,"/usercenter/") || isStartWith(content,"/account/")){
content = "";
}else{
var index =content.substr(1).indexOf("/");
content = content.substr(0,index+1);
delete index;
}
if(content != null && content != '' && content != ' ' && content.indexOf("store") && content.indexOf("/bg")){
if(isStartWith(content,"/")){
contextPath = contextPath + content;
}else{
contextPath = contextPath +"/"+ content;
}
}
return contextPath;
}
看到这里对其多出的/cloud就不足为怪了。本来路径是http://192.168.6.24:9990/cloud/unpack/pickupAppeal.jsp?bean.id=100451&status=4&login_success=true
四、解决
如下修改
function getContextPath(){
var contextPath = window.location.protocol + "//" + window.location.host;
var content = document.location.pathname;
if(isStartWith(content,"/account/") || isStartWith(content,"/cloud/")){
content = "";
}else{
var index =content.substr(1).indexOf("/");
content = content.substr(0,"/")){
contextPath = contextPath + content;
}else{
contextPath = contextPath +"/"+ content;
}
}
return contextPath;
}
??
（编辑：李大同）
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