1、通过静态方法获取 HttpServletRequest
java
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/**
* 从DispatcherServlet中获取到当前的request
* @return
*/
public static HttpServletRequest getRequest() {
// 从当前threadlocal中获取到
ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
return servletRequestAttributes.getRequest();
}
2、通过静态方法获取 HttpServletResponse
java
复制代码
/**
* 从DispatcherServlet中获取到当前的response
* @return
*/
public static HttpServletResponse getResponse() {
// 从当前threadlocal中获取到
ServletWebRequest servletRequestAttributes = (ServletWebRequest)RequestContextHolder.getRequestAttributes();
return servletRequestAttributes.getResponse();
}
3、response 写出json数据
java
复制代码
/**
* 写出json数据，任意数据类型
* */
public static void writeJsonToObj(HttpServletResponse response, Object obj) {
response.setCharacterEncoding("UTF-8");
response.setContentType("application/json; charset=utf-8");
PrintWriter out = null;
try {
out = response.getWriter();
out.write(JSONObject.toJSONString(obj));
out.flush();
} catch (IOException e) {
e.printStackTrace();
throw new IllegalStateException("IO异常,:" + e.getMessage());
} finally {
if (out != null)
out.close();
}
}