爲什麼struts.xml正確，但頁面是404？

Question

Struts的版本是2.3.16

在struts.xml，我加入這個

<action name="ajaxuser" class="com.pp.ajax.UserAccount"> 
    <result name="success">/out.jsp</result> 
</action> 

的XML和UserAccount類是正確的，因爲有一定的要求，以這個網址是確定的，但有些要求是404

這是成功的請求

Request URL:http://localhost:8080/pp/ajaxuser 
Request Method:POST 
Status Code:200 OK 
Request Headersview source 
Accept:*/* 
Accept-Encoding:gzip,deflate 
Accept-Language:zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4 
Connection:keep-alive 
Content-Length:45 
Content-Type:application/x-www-form-urlencoded; charset=UTF-8 
Cookie:JSESSIONID=B6D15A95251B1477473BC524E7E9E148; Siggraph-Fontresizer=105; targetEncodinghttp://your-site=1; PHPSESSID=k2fi36gbn8979riffibp2mt1f7; _ga=GA1.1.2049659497.1410967472 
Host:localhost:8080 
Origin:http://localhost:8080 
Referer:http://localhost:8080/pp/user-account 
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36 
X-Requested-With:XMLHttpRequest 
Form Dataview sourceview URL encoded 
userId:2 
username:b 
password:b 
oper:edit 
id:8 
Response Headersview source 
Content-Length:5 
Content-Type:text/html;charset=ISO-8859-1 
Date:Thu, 25 Sep 2014 07:09:26 GMT 
Server:Apache-Coyote/1.1 

---

，這是失敗的請求

Remote Address:127.0.0.1:8080 
Request URL:http://localhost:8080/pp/ajaxuser 
Request Method:POST 
Status Code:404 Not Found 
Request Headersview source 
Accept:*/* 
Accept-Encoding:gzip,deflate 
Accept-Language:zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4 
Connection:keep-alive 
Content-Length:55 
Content-Type:application/x-www-form-urlencoded; charset=UTF-8 
Cookie:JSESSIONID=B6D15A95251B1477473BC524E7E9E148; Siggraph-Fontresizer=105; targetEncodinghttp://your-site=1; PHPSESSID=k2fi36gbn8979riffibp2mt1f7; _ga=GA1.1.2049659497.1410967472 
Host:localhost:8080 
Origin:http://localhost:8080 
Referer:http://localhost:8080/pp/user-account 
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36 
X-Requested-With:XMLHttpRequest 
Form Dataview sourceview URL encoded 
userId:abc 
username:abc 
password:abc 
oper:add 
id:_empty 
Response Headersview source 
Content-Language:en 
Content-Length:1089 
Content-Type:text/html;charset=utf-8 
Date:Thu, 25 Sep 2014 07:10:15 GMT 
Server:Apache-Coyote/1.1 

我看不出這兩個要求之間有什麼不同，所以我不明白爲什麼這個問題發生

我也是在開始的UserAccount增加了斷點，但該方案不能達到這個斷點，服務器顯示此錯誤

WARNING: Could not find action or result: /pp/ajaxuser 
No result defined for action com.pp.ajax.UserAccount and result input 

我不知道如何追查這個問題，我現在該怎麼辦？

Answer 1

您正在執行POST請求，並且驗證攔截器可能會返回INPUT結果。通常，您可以通過將INPUT結果添加到操作配置來解決此問題。

<action name="ajaxuser" class="com.pp.ajax.UserAccount"> 
    <result name="success">/out.jsp</result> 
    <result name="input">/out.jsp</result> 
</action> 

您還可以通過從動作配置除去validation interceptor或通過重寫其添加方法攔截器配置參數excludeMethods排除驗證這個動作，那麼你就需要這樣的結果。