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MockHttpServletRequest + Controller @RequestMapping 单元测试之 NullPointerException

MockHttpServletRequestController@RequestMapping单元测试NullPointerException 
阅读更多
MockHttpServletRequest 测试spring的Controller，如果Controller的类名和要调用的方法名上都写有@RequestMapping：
@Controller
@RequestMapping("email")
public class EmailRest extends AbstractController {

    @RequestMapping(method = RequestMethod.POST, value = "send")
    public HttpEntity<?> sendEmail(@Valid @RequestBody EmailForm json)  {
则如果在@Test里这样写：
MockHttpServletRequest request;
...
request.setRequestURI("/email/send");
则测试时会莫名其妙的报NullPointerException。

解决办法是为MockHttpServletRequest设置如下一个attribute：
request.setAttribute(HandlerMapping.INTROSPECT_TYPE_LEVEL_MAPPING, true);
参考资料：
http://hi.baidu.com/dgfytufxgvfmvwr/item/2c0ecdee115ffe0c8c3ea806
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