JSR-303的驗證沒有Spring MVC中3.X工作

Question

 
validation-api-1.0.0.GA.jar and hibernate-validator-4.1.0.Final.jar are in classpath. 


mvc:annotation-driven is in -servlet.xml file. 

@RequestMapping(value = "/addEmployee", method = RequestMethod.POST) public ModelAndView addEmployee(@Valid EmployeeDTO employeeDTO, BindingResult result) {

System.out.println("addEmployee employeeDTO! "+ employeeDTO); 
     System.out.println("result.getErrorCount() "+result.getErrorCount()); 

}

public class EmployeeDTO {

private int employeeId; 
public int getEmployeeId() { 
    return employeeId; 
} 


public void setEmployeeId(int employeeId) { 
    this.employeeId = employeeId; 
} 

@NotNull 
private String firstName; 
@NotNull 
private String lastName; 
private Date hireDate; 

} 

in the console 

addEmployee employeeDTO! EmployeeDTO [employeeId=0, firstName=, lastName=, deptName=null, deptId=0, email=, salary=0, jobId=AD_VP, hireDate=null] 
result.getErrorCount() 0 

Answer 1

的DTO似乎並不爲無效，根據您所引用的控制檯消息。 firstName和lastName字段似乎設置爲空字符串""，而不是null;因此，驗證沒有理由拒絕你的bean。

如果您希望將空輸入字段綁定爲空（並通過驗證被拒絕），您可以在活頁夾中註冊StringTrimmerEditor。