通过 Spring 连接 mongodb 时创建名称为 'mongoTemplate' 的 bean 时出错
Error creating bean with name 'mongoTemplate' while connecting mongodb through Spring
我正在尝试将 mongoDb 与 Spring 的 mongoTemplate 连接起来。我还尝试将 'spring-data-mongodb' 的版本从 1.7.2.RELEASE 更改为 1.8.2.RELEASE，但即使这样也没有用。
下面是我在项目中使用的代码。
这是我的 pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.storeApp</groupId>
<artifactId>storeApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Store Application</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
</parent>
<dependencies>
<!-- <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.4.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>storeApp</finalName>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
我的 SpringMongoConfig 文件
package com.storeApp.config;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.core.MongoFactoryBean;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
import com.mongodb.MongoClient;
@Configuration
public class SpringMongoConfig1 {
public @Bean
MongoDbFactory mongoDbFactory() throws Exception{
return new SimpleMongoDbFactory(new MongoClient(), "storeApp");
}
public @Bean
MongoTemplate mongoTemplate() throws Exception{
MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory());
return mongoTemplate;
}
// ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoConfig.class);
// MongoOperations mongoOperation = (MongoOperations)ctx.getBean("mongoTemplate");
}
这是我的主要class
package com.storeApp.core;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import com.storeApp.config.SpringMongoConfig1;
import com.storeApp.config.SpringMongoConfig2;
import com.storeApp.model.Store;
public class StoreMainApp {
public static void main(String[] args) {
ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoConfig1.class);
MongoOperations mongoOperation = (MongoOperations)ctx.getBean("mongoTemplate");
Store store = new Store("Sample store 1", "Street 1", "City 1", (float) 35.4);
System.out.println("into main method");
// mongoOperation.save(store);
}
}
堆栈跟踪：
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Opened connection [connectionId{localValue:1, serverValue:12}] to 127.0.0.1:27017
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Monitor thread successfully connected to server with description ServerDescription{address=127.0.0.1:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 2, 10]}, minWireVersion=0, maxWireVersion=4, maxDocumentSize=16777216, roundTripTimeNanos=1546838}
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in com.storeApp.config.SpringMongoConfig1: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
at com.storeApp.core.StoreMainApp.main(StoreMainApp.java:20)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
... 13 more
Caused by: java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper.<clinit>(DefaultMongoTypeMapper.java:49)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.<init>(MappingMongoConverter.java:111)
at org.springframework.data.mongodb.core.MongoTemplate.getDefaultMongoConverter(MongoTemplate.java:2039)
at org.springframework.data.mongodb.core.MongoTemplate.<init>(MongoTemplate.java:217)
at org.springframework.data.mongodb.core.MongoTemplate.<init>(MongoTemplate.java:202)
at com.storeApp.config.SpringMongoConfig1.mongoTemplate(SpringMongoConfig1.java:25)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96.CGLIB$mongoTemplate[=16=](<generated>)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96$$FastClassBySpringCGLIB$d3ef2d.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96.mongoTemplate(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 14 more
Not getting where is the problem...
你只需要下面的依赖，它会为你带来所有需要的jar。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
您遇到的错误 java.lang.NoSuchMethodError 是针对 ClassTypeInformation class 的。构建项目后，请检查 spring-data-commons-1.12.3.RELEASE.jar 是否存在。如果没有，请尝试清理您的构建环境并更新 maven 项目。
聚会有点晚了，但这就是你需要的。
如果您尝试使用自定义数据操作而不是使用默认的内置 mongo repositories，那么您需要一个 mongoTemplate（类似于 jdbc 模板，但允许您定义您的自己的客户端实现，即 mongo client ，在这种情况下）和可选的 mongoOperations 在它之上（Mongo Operations 是 mongoTemplate 之上的一种包装)
您需要以下依赖项 - pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
</dependency>
MongoConfig.java
@PropertySource("classpath:application.properties")
public class MongoConfig{
@Value("${spring.data.mongodb.host}")
private String mongoHost;
@Value("${spring.data.mongodb.port}")
private String mongopPort;
@Value("${spring.data.mongodb.database}")
private String mongoDB;
/*Client vs FactoryClient
*
* Factory bean that creates the com.mongodb.MongoClient instance
*
* Classes attributed with @Repostiory may throw mongo related exceptions. Declaring an instance of MonogClientFactoryBean
* helps in translating them to spring data exceptions which can then be caught using @ExceptionHandling
* */
public @Bean MongoClientFactoryBean mongo() throws Exception {
MongoClientFactoryBean mongo = new MongoClientFactoryBean();
mongo.setHost("localhost");
MongoClientOptions clientOptions = MongoClientOptions.builder().applicationName("FeddBackAPI_DB")
.connectionsPerHost(2000)
.connectTimeout(4000)
//.maxConnectionIdleTime(1000000000)
.maxWaitTime(3000)
.retryWrites(true)
.socketTimeout(4000)
.sslInvalidHostNameAllowed(true)//this is very risky
.build();
mongo.setMongoClientOptions(clientOptions);
return mongo;
}
}
DataSourceConfig.java
@Configuration
@Import(value=MongoClientFactory.class)
public class DataSourceConfig {
@Autowired
Mongo mongo;
@Autowired
Environment env;
@Bean
public String test() {
System.out.println("mongo"+mongo);
return "rer";
}
@Bean
@Qualifier("customMongoTemplate")
public MongoTemplate mongoTemplate() {
//MongoClient is the actual pool used by mongo. Create it using client factory then, autoclosing of threads are handled on its own
MongoDbFactory factory = new SimpleMongoDbFactory((MongoClient) mongo, "mongo_test");
MongoTemplate template = new MongoTemplate(factory);
return template;
}
@Bean
@Qualifier(value="customMongoOps")
public MongoOperations mongoOps() {
MongoOperations ops = mongoTemplate();
return ops;
}
@Bean
public MongoDbFactory factory() {
MongoDbFactory factory = new SimpleMongoDbFactory((MongoClient) mongo, "mongo_test");
return factory;
}
// @Bean
// public GridFsTemplate gridFsTemplate() {
// return new GridFsTemplate(mongo, converter)
// }
}
这应该会成功创建 mongoTemplate 和 mongoOperations，您应该能够在您的 DAO 或服务中使用它们并访问它们。
PersonService.java
@Service
public class PersonService {
@Autowired
private PersonRepository personRepo;
@Autowired
PersonSequenceServiceImpl seqService;
@Autowired
@Qualifier(value="customMongoOps")
MongoOperations mongoOps;
public List<Person> findAllPersons() {
return personRepo.findAll();
}
public List<Person> createAndFindAllPersons() {
Person p1 = new Person( "another1", "ll1", 30);
Person p2 = new Person( "another2", "ll2", 30);
if(!mongoOps.collectionExists(Person.class)) {
mongoOps.dropCollection("Person_table");
}
//return personRepo.save(person);
System.out.println("P1 data before inserting:"+p1);
mongoOps.insert(Arrays.asList(p1,p2), Person.class);
//mongoOps.dropCollection(Person.class);
return mongoOps.findAll(Person.class);
}
}
我知道这不是技术上合理的解决方案。但是在尝试了几种替代方法之后，我只是 关闭了 Eclipse 并 删除了所有 .m2 文件夹内容 。
然后，我尝试将项目导入新的工作区并进行编译。
惊喜！这次成功了:)
有时重新启动工作 ;)
我正在尝试将 mongoDb 与 Spring 的 mongoTemplate 连接起来。我还尝试将 'spring-data-mongodb' 的版本从 1.7.2.RELEASE 更改为 1.8.2.RELEASE，但即使这样也没有用。
下面是我在项目中使用的代码。
这是我的 pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.storeApp</groupId>
<artifactId>storeApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Store Application</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
</parent>
<dependencies>
<!-- <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.4.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>storeApp</finalName>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
我的 SpringMongoConfig 文件
package com.storeApp.config;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.core.MongoFactoryBean;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
import com.mongodb.MongoClient;
@Configuration
public class SpringMongoConfig1 {
public @Bean
MongoDbFactory mongoDbFactory() throws Exception{
return new SimpleMongoDbFactory(new MongoClient(), "storeApp");
}
public @Bean
MongoTemplate mongoTemplate() throws Exception{
MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory());
return mongoTemplate;
}
// ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoConfig.class);
// MongoOperations mongoOperation = (MongoOperations)ctx.getBean("mongoTemplate");
}
这是我的主要class
package com.storeApp.core;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import com.storeApp.config.SpringMongoConfig1;
import com.storeApp.config.SpringMongoConfig2;
import com.storeApp.model.Store;
public class StoreMainApp {
public static void main(String[] args) {
ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoConfig1.class);
MongoOperations mongoOperation = (MongoOperations)ctx.getBean("mongoTemplate");
Store store = new Store("Sample store 1", "Street 1", "City 1", (float) 35.4);
System.out.println("into main method");
// mongoOperation.save(store);
}
}
堆栈跟踪：
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Opened connection [connectionId{localValue:1, serverValue:12}] to 127.0.0.1:27017
Oct 18, 2016 10:08:47 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Monitor thread successfully connected to server with description ServerDescription{address=127.0.0.1:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 2, 10]}, minWireVersion=0, maxWireVersion=4, maxDocumentSize=16777216, roundTripTimeNanos=1546838}
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in com.storeApp.config.SpringMongoConfig1: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
at com.storeApp.core.StoreMainApp.main(StoreMainApp.java:20)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
... 13 more
Caused by: java.lang.NoSuchMethodError: org.springframework.data.util.ClassTypeInformation.from(Ljava/lang/Class;)Lorg/springframework/data/util/ClassTypeInformation;
at org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper.<clinit>(DefaultMongoTypeMapper.java:49)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.<init>(MappingMongoConverter.java:111)
at org.springframework.data.mongodb.core.MongoTemplate.getDefaultMongoConverter(MongoTemplate.java:2039)
at org.springframework.data.mongodb.core.MongoTemplate.<init>(MongoTemplate.java:217)
at org.springframework.data.mongodb.core.MongoTemplate.<init>(MongoTemplate.java:202)
at com.storeApp.config.SpringMongoConfig1.mongoTemplate(SpringMongoConfig1.java:25)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96.CGLIB$mongoTemplate[=16=](<generated>)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96$$FastClassBySpringCGLIB$d3ef2d.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
at com.storeApp.config.SpringMongoConfig1$$EnhancerBySpringCGLIB$e5bc96.mongoTemplate(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 14 more
Not getting where is the problem...
你只需要下面的依赖，它会为你带来所有需要的jar。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
您遇到的错误 java.lang.NoSuchMethodError 是针对 ClassTypeInformation class 的。构建项目后，请检查 spring-data-commons-1.12.3.RELEASE.jar 是否存在。如果没有，请尝试清理您的构建环境并更新 maven 项目。
聚会有点晚了，但这就是你需要的。
如果您尝试使用自定义数据操作而不是使用默认的内置 mongo repositories，那么您需要一个 mongoTemplate（类似于 jdbc 模板，但允许您定义您的自己的客户端实现，即 mongo client ，在这种情况下）和可选的 mongoOperations 在它之上（Mongo Operations 是 mongoTemplate 之上的一种包装)
您需要以下依赖项 - pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
</dependency>
MongoConfig.java
@PropertySource("classpath:application.properties")
public class MongoConfig{
@Value("${spring.data.mongodb.host}")
private String mongoHost;
@Value("${spring.data.mongodb.port}")
private String mongopPort;
@Value("${spring.data.mongodb.database}")
private String mongoDB;
/*Client vs FactoryClient
*
* Factory bean that creates the com.mongodb.MongoClient instance
*
* Classes attributed with @Repostiory may throw mongo related exceptions. Declaring an instance of MonogClientFactoryBean
* helps in translating them to spring data exceptions which can then be caught using @ExceptionHandling
* */
public @Bean MongoClientFactoryBean mongo() throws Exception {
MongoClientFactoryBean mongo = new MongoClientFactoryBean();
mongo.setHost("localhost");
MongoClientOptions clientOptions = MongoClientOptions.builder().applicationName("FeddBackAPI_DB")
.connectionsPerHost(2000)
.connectTimeout(4000)
//.maxConnectionIdleTime(1000000000)
.maxWaitTime(3000)
.retryWrites(true)
.socketTimeout(4000)
.sslInvalidHostNameAllowed(true)//this is very risky
.build();
mongo.setMongoClientOptions(clientOptions);
return mongo;
}
}
DataSourceConfig.java
@Configuration
@Import(value=MongoClientFactory.class)
public class DataSourceConfig {
@Autowired
Mongo mongo;
@Autowired
Environment env;
@Bean
public String test() {
System.out.println("mongo"+mongo);
return "rer";
}
@Bean
@Qualifier("customMongoTemplate")
public MongoTemplate mongoTemplate() {
//MongoClient is the actual pool used by mongo. Create it using client factory then, autoclosing of threads are handled on its own
MongoDbFactory factory = new SimpleMongoDbFactory((MongoClient) mongo, "mongo_test");
MongoTemplate template = new MongoTemplate(factory);
return template;
}
@Bean
@Qualifier(value="customMongoOps")
public MongoOperations mongoOps() {
MongoOperations ops = mongoTemplate();
return ops;
}
@Bean
public MongoDbFactory factory() {
MongoDbFactory factory = new SimpleMongoDbFactory((MongoClient) mongo, "mongo_test");
return factory;
}
// @Bean
// public GridFsTemplate gridFsTemplate() {
// return new GridFsTemplate(mongo, converter)
// }
}
这应该会成功创建 mongoTemplate 和 mongoOperations，您应该能够在您的 DAO 或服务中使用它们并访问它们。
PersonService.java
@Service
public class PersonService {
@Autowired
private PersonRepository personRepo;
@Autowired
PersonSequenceServiceImpl seqService;
@Autowired
@Qualifier(value="customMongoOps")
MongoOperations mongoOps;
public List<Person> findAllPersons() {
return personRepo.findAll();
}
public List<Person> createAndFindAllPersons() {
Person p1 = new Person( "another1", "ll1", 30);
Person p2 = new Person( "another2", "ll2", 30);
if(!mongoOps.collectionExists(Person.class)) {
mongoOps.dropCollection("Person_table");
}
//return personRepo.save(person);
System.out.println("P1 data before inserting:"+p1);
mongoOps.insert(Arrays.asList(p1,p2), Person.class);
//mongoOps.dropCollection(Person.class);
return mongoOps.findAll(Person.class);
}
}
我知道这不是技术上合理的解决方案。但是在尝试了几种替代方法之后，我只是 关闭了 Eclipse 并 删除了所有 .m2 文件夹内容 。 然后，我尝试将项目导入新的工作区并进行编译。 惊喜！这次成功了:) 有时重新启动工作 ;)