No result defined for action and result
1、validate方法没有通过;
2、页面元素中有重命名时,但后台action类的对应的接收此同名参数的是变量而没有写成数组,这个极有可能,我就碰到过,搞了好久才发现是这个原因
要检查这种错误时,可以
1,在后台action类中重写ActionSupport中的
void addActionError(String anErrorMessage)
void addActionMessage(String aMessage)
void addFieldError(String fieldName, String errorMessage)
这三个方法,在并在其实现代码中设置断点,监控传入的参数,并可获知页面的相关报错具体原因.
2,在页面中加入以下标签,将错误显示出来:
<div style=”color:red”>
<s:fielderror />
</div>
struts2.1.8 必须配置namespace
在2.0中一切OK,没有问题,但是在2.1中确出现了No result defined for action的异常,郁闷了好半天,经过多方查找,原来是在2.1中有一个插件struts2-convention-plugin-2.1.8.jar,这个插件是2.1版本中新添加的默认核心包,这个插件是实现Struts2的零配置,但是这样问题就来了,如果引入就必须引入namespace命名空间,否则就会出现刚才的No result defined for action的异常
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