/**
* cors输出json数据
* @param response
* @param json json字符串
* @param domain 需要跨域的域名
*/
protected void outputCrossString(final HttpServletResponse response, final String json, final String domain) {
try {
response.setContentType("application/json;charset=utf-8");
response.setCharacterEncoding("utf-8");
response.setHeader("Pragma", "No-cache");
response.setDateHeader("Expires", 0);
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Access-Control-Allow-Origin", domain); //核心请求头
response.setHeader("Access-Control-Allow-Credentials", "true"); //核心请求头
PrintWriter out = null;
try {
out = response.getWriter();
out.write(json);
out.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (out != null) {
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}输出json数据只需调用这个方法即可
