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JEAP 5&6 - 編碼設定問題 (Encoding)

FAQ 系列:

常常會有人問JBoss 的編碼要如何設定,在這裡整理一下我知道的部分:
編碼的部分,除了自己程式該定好要定好之外,設定的部分大致上分為三個部分:

1. 與資料庫DataSource 連接存取的編碼問題。
這個設定與你使用的JDBC Driver 很有關係,所以參數要對照使用的資料庫,會有所不同。
不同的資料庫會有不同的參數,如 Postgresql 是 charset=UTF-8

2. 網路資料傳輸
這裡與Tomcat 有關係,因為JBoss 的 Web Container 底層是Tomcat,所以設定的也與 Tomcat一樣設定分成兩個部分,

Get
修改Server上的 URI Encoding 即可。

JBoss EAP 6

到 domain 或是 standalone.xml 裡面增加參數:

<system-properties>
<property name="org.apache.catalina.connector.URI_ENCODING" value="UTF-8"/>
<property name="org.apache.catalina.connector.USE_BODY_ENCODING_FOR_QUERY_STRING" value="true"/>
</system-properties>



JBoss EAP 5

JBOSS_INSTALL_PATH/jboss-as/server/xxx/deploy/jbossweb.sar 下的
server.xml 裡面修改

<!-- A HTTP/1.1 Connector on port 8080 -->
<Connector protocol="HTTP/1.1" port="8080" address="${jboss.bind.address}" connectionTimeout="20000" redirectPort="8443" URIEncoding="UTF-8useBodyEncodingForURI="true"/>


Post 
需要加入 Encoding 的 Filter 才可以。 HTTP/1.1 這個通訊協定上有寫明,會以 header裡面Content-Type 欄位為判斷編碼的標準。可惜現在大部份的瀏覽器好像都沒有支援好好地把這個部分帶上去(尤其是遇到Ajax的時候)。

所以只好靠Filter 去強制把編碼的改為你想要的,
做法就是下載 filters.jar 檔案,放到你的WEB-INF/lib
然後修改 web.xml 增加新的filter,


<filter>
    <filter-name>setCharacterFilter</filter-name>
    <filter-class>filters.SetCharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>Big5</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>setCharacterFilter</filter-name>
    <url-pattern>*</url-pattern>
</filter-mapping>



3. JVM 設定
這個可以改變 JVM default 讀寫檔案的編碼。 再啟動JBoss 的 conf 裡面加上參數:

JEAP 6

JBOSS_INSTALL_PATH/bin/standalone.conf 或是 domain.conf 裡面
加上 JAVA_OPTS="$JAVA_OPTS -Dfile.encoding=UTF8

JEAP 5

JBOSS_INSTALL_PATH/jboss-as/bin 下的 run.conf (Linux) run.conf.bat (Window)中
加上 JAVA_OPTS="$JAVA_OPTS -Dfile.encoding=UTF8

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