Question

我在Spring MVC应用程序中遇到以下异常：

org.springframework.beans.NotReadablePropertyException: Invalid property 'moduleName' of bean class      [java.lang.String]: Bean property 'moduleName' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?
org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:726)
org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:717)
org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:149)

JSP代码

<form:form method="post" action="/submitSurvey" modelAttribute="surveyModule" > 
<form:label  path="moduleName">Module Name</form:label>
<form:input path="moduleName" />
<input type="submit" value="Save"/>
</form:form>

Spring Controller

@RequestMapping(value = "/submitSurvey", method = RequestMethod.POST)
public String submitSurvey(@ModelAttribute("surveyModule")SurveyModule sm, Model model){
    surveyService.setSurveyModule(sm);
    return "surveyHome";
}

Bean：SurveyModule.java

@Entity
@Table(name="SURVEYMODULE")
public class SurveyModule {

@Id
@Column(name="SurveyModuleId")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer surveyModuleId;
private String moduleName;

public Integer getSurveyModuleId() {
    return surveyModuleId;
}
public void setSurveyModuleId(Integer surveyModuleId) {
    this.surveyModuleId = surveyModuleId;
}
public String getModuleName() {
    return moduleName;
}
public void setModuleName(String moduleName) {
    this.moduleName = moduleName;
}
}

属性moduleName存在于bean类中。虽然我能够使用该属性获取数据，为什么我收到此错误？我怎么能纠正这个？

Answer 1

请注意错误说明

Invalid property 'moduleName' of bean class      [java.lang.String]

这意味着ElResolver将surveyModule解析为 String ，而不是 SurveyModule 类。这意味着有一个具有相同键的赋值，这会导致您的问题。检查用于存储在其他模型属性或会话中的密钥，还检查页面中某处是否有<c:set var="surveyModule"

NotReadablePropertyException：bean类的属性'moduleName'无效

1 个答案: