当你开发一个项目,如果你选择的是spring MVC 框架,而你在前台使用spring的标签时,那么你有可能出现在这个情况。

javax.servlet.jsp.JspTagException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute

方法:1为抛出异常原因,2为异常解决方法。

1.    原因:   进入spring:bind标签源码你可以看到

Object target = requestContext.getModelObject(beanName);
   if (target == null) {
    throw new IllegalStateException("Neither BindingResult nor plain target object for bean name '" +
      beanName + "' available as request attribute");
   }

beanName=    <spring:bind path="command.spjg">的绿色部分

如果你是直接对某个页面进行请求,那么request中还没command这个对象

2.

在页面上加上

<jsp:useBean id="command"  class="com.ztenc.proj.bean.AFRFOAP" scope="request" ></jsp:useBean>

红色部分填上你的绑定类

PS:虽不明,但觉厉~

以上内容是转载、 接下来是我自己的原创解决方案:

在controller处。加上:

@ModelAttribute
public Product get(@RequestParam(required=false) Long id) {
  return id==null?new Product():productService.findOne(id);
}

一切OK

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