当我在另外两个POJO类中声明字段变量时,我想在struts2操作类中自动设置jsp文本字段值
我不想在Action类中再次声明这些变量 员工POJO:当我在另外两个POJO类中声明字段变量时,我想在struts2操作类中自动设置jsp文本字段值,struts2,Struts2,我不想在Action类中再次声明这些变量 员工POJO: package com.pojo; import java.io.Serializable; public class Employee{ String name; Address address; public String getName() { return name; } public void setName(String name) { this
package com.pojo;
import java.io.Serializable;
public class Employee{
String name;
Address address;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
地址POJO:
package com.pojo;
import java.io.Serializable;
public class Address{
String email;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
JSP:
我想在Action类中自动填充值并设置值
有人能帮我吗……。在带有getter/setter的action类中有两个对象
private Address address = new Address();
private Employee employee = new Employee();;
然后在jsp中执行以下操作:
<body>
<s:form action="beanEx">
<s:textfield name="employee.name" label="name"/>
<s:textfield name="address.email" label="email"/>
<s:submit value="Submit"/>
</s:form>
</body>
基本上,之前您指向的是字段,现在您指向的是对象内部的字段。当我从Jsp检索到Action类时,它显示NullPointer异常。单击“提交”后,如果进行调试,您将发现您的地址和员工对象中充满了Jsp中的数据,如果您按照上面的代码进行操作,但我们必须添加for name属性,例如:哦,是的,我的错,我没有在运行时检查此代码:)
<body>
<s:form action="beanEx">
<s:textfield name="employee.name" label="name"/>
<s:textfield name="address.email" label="email"/>
<s:submit value="Submit"/>
</s:form>
</body>