在对控制层使用(powermockito+junit+mockmvc)做单元测试,出现版本兼容性bug（javax.servlet.http.HttpServletResponse.getStatu）

逃离我推掉我的手 2023-10-10 12:34 10阅读 0赞

## 项目场景： ##

项目场景：在对控制层使用(powermockito+junit+mockmvc)做单元测试,出现版本兼容性bug

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## 问题描述： ##

对查询设备历史状态的接口进行单元测试时，代码一切正常，控制台打印无报错，junit显示报错。  
测试代码如下：

package com.fotile.cloud.controller;
    
    import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import javax.annotation.Resource;
    
    import org.junit.Test;
    import org.powermock.api.mockito.PowerMockito;
    import org.powermock.core.classloader.annotations.PrepareForTest;
    import org.springframework.context.ApplicationContext;
    import org.springframework.http.HttpHeaders;
    import org.springframework.http.MediaType;
    import org.springframework.test.web.servlet.ResultActions;
    import org.springframework.test.web.servlet.request.MockHttpServletRequestBuilder;
    import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
    import org.springframework.test.web.servlet.result.MockMvcResultHandlers;
    
    import com.fotile.cloud.admin.idc.request.IDCDeviceInfo;
    import com.fotile.cloud.controller.support.SpringJunit4MockSupport;
    import com.fotile.cloud.entity.tsl.DataTypeDes;
    import com.fotile.cloud.entity.tsl.ProductAtTSL;
    import com.fotile.cloud.entity.tsl.TSLPropertyDetail;
    import com.fotile.cloud.facade.tsl.TSLService;
    import com.google.gson.Gson;
    
    @PrepareForTest({
         IDCControllerTest.class })
    public class IDCControllerTest extends SpringJunit4MockSupport
    {
        
        @Resource
        private ApplicationContext context;
        Gson gson = new Gson();
    
        private HttpHeaders getHeaders()
        {
        
    	String token = "0nIilFSQ50R0hkQKhXbiFUVvtmewxEeutEOiojIt9GZuFmciwiI4JiOi02bk5WYSBHchJCLiQjM5YmNyYGO1kjM0MTZlJGZmRDN3gTYycDZ2AjZhJzMiojIklmIsIiNwIiOiUGc5RnI7ZDM="; // TODO
    	HttpHeaders httpHeaders = new HttpHeaders();
    	httpHeaders.set("Access-Token", token);
    	httpHeaders.set("Content-Type", "application/json");
    	return httpHeaders;
        }
    
        @Test
        public void testHistoryStatusInfo() throws Exception
        {
        
    	TSLService tSLService = context.getBean(TSLService.class);
    	// 准备预判返回情况
    	String productId = getRequestParm().getProductId();
    	PowerMockito.when(tSLService.getProductTSLRelation(productId)).thenReturn(getProductAtTSL());
    	PowerMockito
    		.when(tSLService.getTSLPropertyInfo(getProductAtTSL().getTslId(), getRequestParm().getPropertyName()))
    		.thenReturn(getTSLPropertyDetail());
    
    	// 模拟请求
    	String json = gson.toJson(getRequestParm());
    	String url = "/product/historyStatusInfo";
    	MockHttpServletRequestBuilder content = MockMvcRequestBuilders.post(url).headers(getHeaders()).content(json)
    		.contentType(MediaType.APPLICATION_JSON);
    	ResultActions resultActions = mockmvc.perform(content);
    	resultActions.andExpect(status().isOk()).andDo(MockMvcResultHandlers.print()).andReturn();
        }
    
        // 准备请求参数
        private IDCDeviceInfo getRequestParm()
        {
        
    	String productId = "e3239b118f9af0b46f1409064aecb0aa";
    	String startDay = "2020-04-01";
    	String endDay = "2020-04-30";
    	String propertyName = "故障号";
    	Integer statusNum = 0;
    	Integer pageSize = 10;
    	Integer pageNum = 1;
    	String order = "desc";
    	return new IDCDeviceInfo(productId, startDay, endDay, propertyName, statusNum, pageNum, pageSize, order);
        }
    
        // 准备内部方法返回数据ProductAtTSL
        private ProductAtTSL getProductAtTSL()
        {
        
    	int id = 115;
    	String productId = "e3239b118f9af0b46f1409064aecb0aa";
    	Long tslId = 5100000164L; // TODO
    
    	ProductAtTSL productAtTSL = new ProductAtTSL();
    	productAtTSL.setId(id);
    	productAtTSL.setProductId(productId);
    	productAtTSL.setTslId(tslId);
    	return productAtTSL;
        }
    
        // 准备内部方法返回数据TSLPropertyDetail
        private TSLPropertyDetail getTSLPropertyDetail()
        {
        
    
    	List<DataTypeDes> list = new ArrayList<DataTypeDes>();
    	DataTypeDes dataTypeDes = new DataTypeDes();
    	dataTypeDes.setValue(0);
    	dataTypeDes.setName("无异常");
    	list.add(dataTypeDes);
    	TSLPropertyDetail tslPropertyDetail = new TSLPropertyDetail();
    	tslPropertyDetail.setDataSpecs(list);
    	String identifier = "ErrorNum";
    	tslPropertyDetail.setIdentifier(identifier);
    	return tslPropertyDetail;
        }

报错如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70]

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## 原因分析： ##

这种报错为servlet版本和spring的版本兼容问题  
Spring V4.1.0+的版本在不支持Servlet3.0的应用服务器上跑时会报以下错误：  
NoSuchMethodError: javax.servlet.http.HttpServletResponse.getStatus()I  
比如说：tomcat 7以下的版本、jboss 4.2.3以下的版本  
此时我的Tomcat未被build path引入使用的是eclipse自带的servlet 版本较低  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70 1]

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## 解决方案： ##

引入tomcat  
![在这里插入图片描述][20210310140257391.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70 2]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210310135040599.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210310135601573.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1,size_16,color_FFFFFF,t_70
[20210310140257391.png]: https://img-blog.csdnimg.cn/20210310140257391.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210310140311828.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MDc2OTM1,size_16,color_FFFFFF,t_70