struts2使用ModelDriven接收不到表单数据document 对象所有属性都是null
action类代码：
public class DocumentAction extends BaseAction {
private static final long serialVersionUID = -4869407518855971025L;
private Document document = new Document();
public String add() throws Exception {
System.out.println(document.getContent());
return SUCCESS;
}
@Override
public Object getModel() {
return document;
}
}
-----BaseAction 代码：-------------------------------------
public class BaseAction extends ActionSupport implements ModelDriven<Object> {
private static final long serialVersionUID = -4522508376651310198L;
/**
* 子类重写该方法
*/
@Override
public Object getModel() {
return null;
}
}
jsp页面代码：
<s:form action="add" namespace="/document" method="post">
<s:textfield name="document.title"></s:textfield>
<s:textfield name="document.content"></s:textfield>
<s:submit value="保存"/>
</s:form>
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后台出导常代码：
[framework] 2012-10-18 11:39:18,234 - com.opensymphony.xwork2.ognl.OgnlValueStack -16594 [http-8080-1] WARN com.opensymphony.xwork2.ognl.OgnlValueStack - Error setting expression 'document.content' with value '[Ljava.lang.String;@e671a1'
ognl.OgnlException: target is null for setProperty(null, "content", [Ljava.lang.String;@e671a1)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2239)
at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
at ognl.SimpleNode.setValue(SimpleNode.java:301)
at ognl.ASTChain.setValueBody(ASTChain.java:227)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
------解决思路----------------------
jsp页面代码：
<s:form action="add" namespace="/document" method="post">
<s:textfield name="document.title"></s:textfield>
<s:textfield name="document.content"></s:textfield>
<s:submit value="保存"/>
</s:form>
改为如下：
<s:textfield name="title"></s:textfield>
<s:textfield name="content"></s:textfield>