ajax請求自定義請求頭,伺服器跨域配置
1.ajax傳送請求,紅色部分為自定義新增的請求頭資訊
//上傳視訊檔案 function uploadfile(el) { <@shiro.user> var userId = <@shiro.principal property = "id"/> </@shiro.user> var formData = new FormData(); var file = $(el).siblings().filter('#filedata').prop('files')[0]; formData.append("file", $(el).siblings().filter('#filedata').prop('files')[0]); if(file != null && file != ''){ $.ajax({ url: "http://localhost:8088/jq/vo/up.do", type: "POST", headers: { 'Range': 0, 'Filename': file.name, 'Filelength': file.size, 'UserId': userId, },data: formData, processData: false, // 不要對data引數進行序列化處理,預設為true contentType: false, // 不要設定Content-Type請求頭,因為檔案資料是以 multipart/form-data 來編碼 xhr: function () { myXhr = $.ajaxSettings.xhr(); if (myXhr.upload) { myXhr.upload.addEventListener('progress', function (e) { if (e.lengthComputable) { var percent = Math.floor(e.loaded / e.total * 100); $(el).siblings().filter('#isfile').html('已上傳:' + percent.toString() + '%'); } }, false); } return myXhr; }, success: function (resp) { // console.log(resp,"---success----"); if (resp.flag == 1) { $(el).siblings().filter('#successAlertFile').show().fadeOut(3000);//顯示模態框 $(el).siblings().filter('#successAlertFile').children().css('color', 'green').html('上傳成功!'); $(el).siblings().filter('#videoUrl').val(resp.data.path); } else { $(el).siblings().filter('#successAlertFile').show().fadeOut(3000); $(el).siblings().filter('#successAlertFile').children().css('color', 'red').html('上傳失敗,請重新上傳!'); $(el).siblings().filter('#isfile').html(''); } }, error: function (res) { // 請求失敗 console.log(res); $(el).siblings().filter('#successAlertFile').show().fadeOut(3000); $(el).siblings().filter('#successAlertFile').children().css('color', 'red').html('上傳失敗,請重新上傳!'); $(el).siblings().filter('#isfile').html(''); } }); }else{ $(el).siblings().filter('#successAlertFile').show().fadeOut(3000); $(el).siblings().filter('#successAlertFile').children().css('color', 'red').html('上傳視訊不能為空!'); } }
2.伺服器端配置,設定自定義請求都資訊,解決跨域問題
1.新建java類 CORSFilter.java 下面紅色部分為伺服器端配置的自定義請求頭資訊
package com.enjoy.common;
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* @Author: LBX
* @Date: 2018/5/29 14:02
*/
public class CORSFilter implements Filter {
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) res;
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.addHeader("Access-Control-Allow-Headers"," Access-Control-Allow-Headers,userid,range,filename, filelength
chain.doFilter(req, res);
}
public void init(FilterConfig filterConfig) {
}
public void destroy() {
}
}
2,在web.xml檔案裡面新增以下資訊,注意放到 同級<filter>標籤的最上面
<filter>
<filter-name>cors</filter-name>
<filter-class>com.enjoy.common.CORSFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>cors</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>