- @RequestBody 將HTTP請求正文轉換为适合的HttpMessageConverter對象。
- @ResponseBody 將內容或對象作为 HTTP 響應正文返回，並調用适合HttpMessageConverter的Adapter轉換對象，寫入輸出流。
這次是從Controller 送出 JSON 去前端 ，但發現在前端瀏覽器在顯示中文的時候都後亂碼
原本:
@RequestMapping(params = "action=queryMapDeviceList")
public void queryMapDeviceList(HttpServletRequest request,
HttpServletResponse response) throws IOException, Exception {
........................................................................省略
jsonObjectMaryT.put(new JSONObject(deviceDataT));
jsonObject.put("T", jsonObjectMaryT);
System.out.println("Tbreak =" + jsonObjectMaryT);
System.out.println("Toffline =" + jsonObjectMaryT);
PrintWriter out = response.getWriter();
out.println(jsonObject.toString());
out.flush();
out.close();
}
後來使用@RequestBody 讓訊息出去時用HttpMessageConverter 所設定的格式出去
在mvc_dispatcher_servlet.xml :
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >
<property name="messageConverters">
<list>
<bean class = "org.springframework.http.converter.StringHttpMessageConverter">
<property name = "supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
在controller:
@RequestMapping(params = "action=queryMapDeviceList")
@ResponseBody
public String queryMapDeviceList(HttpServletRequest request,
HttpServletResponse response) throws IOException, Exception {
........................................................................
jsonObjectMaryT.put(new JSONObject(deviceDataT));
jsonObject.put("T", jsonObjectMaryT);
System.out.println("Tbreak =" + jsonObjectMaryT);
System.out.println("Toffline =" + jsonObjectMaryT);
PrintWriter out = response.getWriter();
return jsonObject.toString();
}
這樣問題就解決了，這送出去的String 都以UTF-8 送出!!
參考資料:
http://rritw.com/a/JAVAbiancheng/Spring/20120810/202602.html
