SSH提示ognl.OgnlException: target is null for setProperty
找了好久都不知道错在哪里错误信息：
ognl.OgnlException: target is null for setProperty(null, "action", [Ljava.lang.String;@d37bdd)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2309)
...
2013-01-08 13:06:000,472 [com.opensymphony.xwork2.ognl.OgnlValueStack]-[WARN] Error setting expression 'user.usercode' with value '[Ljava.lang.String;@1daabbf'
ognl.OgnlException: usercode [java.lang.IllegalArgumentException: argument type mismatch]
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:103)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
...
2013-01-08 13:06:000,475 [com.opensymphony.xwork2.ognl.OgnlValueStack]-[WARN] Error setting expression 'user.username' with value '[Ljava.lang.String;@1e33b76'
ognl.OgnlException: username [java.lang.IllegalArgumentException: argument type mismatch]
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:103)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
...
struts.xml:
<struts>
<constant name="struts.objectFactory" value="org.apache.struts2.spring.StrutsSpringObjectFactory"></constant>
<package name="user" extends="struts-default" >
<action name="user?*" class="account" method="{1}">
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
applicationContext.xml:
<beans default-autowire="byName">
<bean id="user" class="com.tsai.space.vo.UserVO" />
<bean id="account" class="com.tsai.space.controller.Account" />
</beans>
action类Account：
public class Account extends ActionSupport {
public UserVO user;
/**
*
*/
private static final long serialVersionUID = 5592712600588043181L;
public Account() {
super();
}
public UserVO getUser() {
return user;
}
public void setUser(UserVO user) {
this.user = user;
}
--------------------编程问答-------------------- 楼主可否贴一下User这个类 --------------------编程问答-------------------- 不好意思是UserVO --------------------编程问答--------------------
JSP：
<s:form action="/user/user?register.action" method="post" >
<s:textfield name="user.username" label="用户名"></s:textfield><br>
<s:textfield name="user.usercode" label="密码"></s:textfield><br>
<s:submit value="注册" ></s:submit>
</s:form>
--------------------编程问答-------------------- <s:textfield name="user.username" label="用户名"></s:textfield><br>
UserVO
public class UserVO implements Serializable{
/**
*
*/
private static final long serialVersionUID = -7468298057329693235L;
private Integer id;
private String userName;
private String userCode;
private Integer userAge;
private boolean userSex;
private String userBirth;
private String userMail;
public UserVO() {
super();
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserCode() {
return userCode;
}
public void setUserCode(String userCode) {
this.userCode = userCode;
}
public Integer getUserAge() {
return userAge;
}
public void setUserAge(Integer userAge) {
this.userAge = userAge;
}
public boolean isUserSex() {
return userSex;
}
public void setUserSex(boolean userSex) {
this.userSex = userSex;
}
public String getUserBirth() {
return userBirth;
}
public void setUserBirth(String userBirth) {
this.userBirth = userBirth;
}
public String getUserMail() {
return userMail;
}
public void setUserMail(String userMail) {
this.userMail = userMail;
}
}
private String userName;
private String userCode;
看看是不是这块不一致
--------------------编程问答-------------------- 你把 <s:form action="/user/user?register.action" method="post" >这句话去掉.action，改成这样
<s:form action="/user/user?register" method="post" > 试一试 --------------------编程问答-------------------- user.usercode 改成 user.userCode --------------------编程问答-------------------- <s:textfield name="user.username" label="用户名"></s:textfield><br>
<s:textfield name="user.usercode" label="密码"></s:textfield><br>
这里的username，usercode和你的javaBean里面的大小写都不一样，注意到了没
补充：Java , Web 开发
