Spring org.apache.jasper.jaspereException:在第[24]行处理[WEB-INF/views/person.jsp]时发生异常

正在尝试从运行代码。添加功能和列表是可行的。但是更新数据会导致JSP错误。 下面是错误日志 org.apache.jasper.jaspereException:在第[24]行处理[WEB-INF/views/person.jsp]时发生异常

        22: <form:form action="${addAction}" commandName="person">
        23: <table>
        24:     <c:if test="${!empty person.name}">
        25:     <tr>
        26:         <td>
        27:             <form:label path="id">


    Root Cause
        java.lang.NumberFormatException: For input string: "name"
        java.lang.NumberFormatException.forInputString(Unknown Source)
        java.lang.Integer.parseInt(Unknown Source)

下面是我表单的完整JSP代码

<form:form action="${addAction}" commandName="person">
<table>
<c:if test="${!empty person.name}">
<tr>
    <td>
        <form:label path="id">
            <spring:message text="ID"/>
        </form:label>
    </td>
    <td>
        <form:input path="id" readonly="true" size="8"  disabled="true" />
        <form:hidden path="id" />
    </td> 
</tr>
</c:if>
<tr>
    <td>
        <form:label path="name">
            <spring:message text="Name"/>
        </form:label>
    </td>
    <td>
        <form:input path="name" />
    </td> 
</tr>
<tr>
    <td>
        <form:label path="country">
            <spring:message text="Country"/>
        </form:label>
    </td>
    <td>
        <form:input path="country" />
    </td>
</tr>
<tr>
    <td colspan="2">
        <c:if test="${!empty person.name}">
            <input type="submit"
                value="<spring:message text="Edit Person"/>" />
        </c:if>
        <c:if test="${empty person.name}">
            <input type="submit"
                value="<spring:message text="Add Person"/>" />
        </c:if>
    </td>
</tr>

---

看起来您发送的是一个

对象[]

，而不是

人

对象

在这里阅读更多

要解决此问题，请在向请求添加属性之前，确保传递的对象类型（Person）正确

final TypedQuery query=entityManager.createQuery（“从person-person中选择person.name”，person.class）；
最终列表resultList=query.getResultList（）；
Person=resultList.get（0）；
map.addAttribute（“person”，person）；

如果这没有帮助，请发布您的后端代码

<form:form action="${addAction}" commandName="person">
<table>
<c:if test="${!empty person.name}">
<tr>
    <td>
        <form:label path="id">
            <spring:message text="ID"/>
        </form:label>
    </td>
    <td>
        <form:input path="id" readonly="true" size="8"  disabled="true" />
        <form:hidden path="id" />
    </td> 
</tr>
</c:if>
<tr>
    <td>
        <form:label path="name">
            <spring:message text="Name"/>
        </form:label>
    </td>
    <td>
        <form:input path="name" />
    </td> 
</tr>
<tr>
    <td>
        <form:label path="country">
            <spring:message text="Country"/>
        </form:label>
    </td>
    <td>
        <form:input path="country" />
    </td>
</tr>
<tr>
    <td colspan="2">
        <c:if test="${!empty person.name}">
            <input type="submit"
                value="<spring:message text="Edit Person"/>" />
        </c:if>
        <c:if test="${empty person.name}">
            <input type="submit"
                value="<spring:message text="Add Person"/>" />
        </c:if>
    </td>
</tr>

final TypedQuery<Person> query = entityManager.createQuery("SELECT person.name from Person person", Person.class);
final List<Person> resultList = query.getResultList();
Person person = resultList.get(0);

map.addAttribute("person", person);