Spring插入错误无法实例化[java.util.Map]：指定的类是一个接口
[英]Spring insert error Failed to instantiate [java.util.Map]: Specified class is an interface
问题描述
I want to post method and execute by swagger, but I have an error. 
我想发布方法并大摇大摆地执行，但是我遇到了一个错误。 I don't know this error from controller, service, dao or config swagger. 我不知道来自控制器，服务，DAO或Config Swagger的此错误。
my project structure: project structure 我的项目结构： 项目结构
AppConfig.java (in package com.project.maven.config) AppConfig.java（在com.project.maven.config包中）
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("**/**")
.addResourceLocations("classpath:/META-INF/resources/");
}
SwaggerConfig.java: SwaggerConfig.java：
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket simpleDiffServiceApi() {
return new Docket(DocumentationType.SWAGGER_2)
.groupName("calculator")
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.any())
.paths(PathSelectors.any())
.build()
.pathMapping("/");
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("A simple service")
.description("A simple REST service made with Spring Boot in Java")
.contact(new Contact("Unmesh Gundecha", "http://unmesh.me", "upgundecha@gmail.com"))
.version("1.0")
.build();
}
}
All dependencies in pom.xml: pom.xml中的所有依赖项：
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<!-- Servlet+JSP+JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- JSON -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.7.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.7.5</version>
</dependency>
<!-- Dependency untuk mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.9</version>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>${slf4j.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- Swagger -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.6.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.6.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.5</version>
</dependency>
<!-- Local Libraries -->
<dependency>
<groupId>com.sap.hana</groupId>
<artifactId>ng</artifactId>
<version>1.0</version>
<scope>system</scope>
<systemPath>${basedir}/src/main/webapp/WEB-INF/ngdbc-1.0.jar</systemPath>
</dependency>
</dependencies>
UserController: UserController的：
@RestController
public class UserController {
@Autowired
private UserService userService;
@PostMapping(value={"/tesinsert"}, consumes={"application/json"})
@ResponseStatus(HttpStatus.OK)
public ResponseEntity<?> insert(@RequestBody KasusEntity user,
@ModelAttribute("init_load") Map<String, String> init) throws Exception {
Map result = new HashMap();
userService.insertTabel(user);
return new ResponseEntity<>(result, HttpStatus.CREATED);
}
}
userService.java: userService.java：
public interface UserService {
public int insertTabel(KasusEntity user);
}
userServiceImpl.java: userServiceImpl.java：
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@Override
public int insertTabel(KasusEntity user) {
return userDao.insert(user);
}
}
userDao.java: userDao.java：
public interface UserDao {
public int insert(KasusEntity user);
}
userDaoImpl.java: userDaoImpl.java：
@Repository
public class UserDaoImpl implements UserDao {
@Autowired
private SessionFactory sessionFactory;
@Transactional
public int insert(KasusEntity tabel) {
return (int) this.sessionFactory.getCurrentSession().save(tabel);
}
}
Error: 错误：
May 23, 2017 3:27:17 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/SpringNew] threw exception [Request processing failed;
How to solve this problem? 如何解决这个问题呢？ is it possible error from swagger config? 大张旗鼓的配置有可能出错吗？ Because I confident error not in controller, dao, service. 因为我确信错误不在控制器，dao，服务中。 maybe config or other. 也许配置或其他。
Thanks. 谢谢。
Bobby 鲍比
1 个解决方案
解决方案1
0 已采纳 2017-05-23 11:37:58
尝试删除@ModelAttribute("init_load") Map<String, String> init
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