使用Eclipse Helios,Apache Tomcat,JSP和JBoss RichFaces。
输入参数编码如下:
<h:inputHidden name="system_REPORT_RESOURCE" value="city" />
<h:inputHidden name="system_REPORT_FILENAME" value="city" />
<h:inputHidden name="report_REPORT_TITLE" value="City Listing" />
... and others ...
以下代码显示了键的值:
@SuppressWarnings( "unchecked" )
protected void setInputParameters() {
HttpServletRequest request = getServletRequest();
Enumeration<String> keys = request.getParameterNames();
while( keys.hasMoreElements() ) {
String key = keys.nextElement();
for( String value : request.getParameterValues( key ) ) {
System.out.println( "KEY: " + key + " VALUE: " + value );
}
}
}
框架修改了密钥的名称:
KEY: j_id2:report_city VALUE: ab
KEY: j_id2:system_REPORT_RESOURCE VALUE: city
KEY: j_id2:j_id11 VALUE: Report
KEY: j_id2:report_REPORT_TITLE VALUE: City Listing
KEY: j_id2:report_int_max_longitude VALUE:
KEY: j_id2:report_int_min_latitude VALUE:
KEY: javax.faces.ViewState VALUE: j_id28
KEY: j_id2:system_REPORT_FILENAME VALUE: city
KEY: j_id2 VALUE: j_id2
更改<h:form>
代码以包含id="form"
属性会产生:
KEY: form:system_REPORT_FILENAME VALUE: city
KEY: form VALUE: form
KEY: form:report_city VALUE: ab
KEY: form:report_int_max_longitude VALUE:
KEY: form:report_REPORT_TITLE VALUE: Canadian City List
KEY: form:system_REPORT_RESOURCE VALUE: city
KEY: form:report_int_min_latitude VALUE:
KEY: form:j_id10 VALUE: Report
KEY: javax.faces.ViewState VALUE: j_id1
这样更好,但仍然不理想。
代码需要统一解析输入表单参数名称。到目前为止,以下代码用于删除前缀(但它感觉hackish):
/**
* Appends the list of HTTP request parameters to the internal parameter
* map of user input values. Some frameworks prepend the name of the HTML
* FORM before the name of the input. This method detects the colon and
* removes the FORM NAME, if present. This means that input parameter
* names assigned by developers should not contain a colon in the name.
* (Technically, it is possible, but to avoid potential confusion it
* should be avoided.)
*/
protected void setInputParameters() {
HttpServletRequest request = getServletRequest();
Iterator<String> keys = getExternalContext().getRequestParameterNames();
Parameters p = getParameters();
while( keys.hasNext() ) {
String key = keys.next();
for( String value : request.getParameterValues( key ) ) {
int i = key.indexOf( ':' );
if( i >= 0 ) {
key = key.substring( i + 1 );
}
p.put( key, value );
}
}
}
什么API调用返回没有j_id2
前缀的参数名称?
删除j_id2
前缀(和可选的完整冒号)可能会引入依赖于框架的代码。
谢谢!
答案 0 :(得分:0)
我认为没有API可以做到这一点,j_id2:XXX是实际的请求参数名称。
答案 1 :(得分:0)
您可以使用标准的HTML <input>
标记。它工作得很好。事实上,我刚刚发布了一个我自己的问题的答案,我发现使用它是最好的主意。请在此处查看:Passing parameters to PrimeFaces Star Rating component?