Spring Boot无法识别application.properties文件
Yu *_*hen 17 java spring spring-boot
我正在尝试使用Spring Boot配置DynamoDb客户端,并将我的端点和配置信息放在我的resources/application.properties文件中.但是,Spring Boot似乎没有获得这些属性.它确实选择了我存储在同一文件中的"server.default"密钥,因此它肯定会识别文件本身.
这是我的application.properties文件和我正在尝试将属性加载到(DynamoDBClientMapper)的类:
amazon.dynamodb.endpoint=http://localhost:8000/
amazon.dynamodb.region=us-west-1
amazon.aws.accesskey=key
amazon.aws.secretkey=key2
server.port=8080
这是我的项目结构:
这是我正在尝试加载属性的相关类.我尝试了@PropertySource注释和新的属性文件,以及EnableAutoConfiguration,但都没有注册属性文件.
@PropertySource("database.properties")
public class DynamoClientMapper {
@Value("${amazon.dynamodb.endpoint}")
private String amazonDynamoDBEndpoint;
@Value("${amazon.aws.accesskey}")
private String amazonAWSAccessKey;
@Value("${amazon.aws.secretkey}")
private String amazonAWSSecretKey;
@Value("${amazon.aws.region}")
private String amazonAWSRegion;
这是我的App.java:
@SpringBootApplication
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})
public class App {
// private static final Logger logger = Logger.getLogger(App.class.toString());
public static void main(String[] args){
SpringApplication.run(App.class, args);
}
}
这是堆栈跟踪:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoClientMapper' defined in file [C:\Users\ychen4\Desktop\DiningApplication\target\classes\main\java\com\dining\dao\DynamoClientMapper.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [main.java.com.dining.dao.DynamoClientMapper$$EnhancerBySpringCGLIB$$f4ba10ad]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: endpoint cannot be null
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1155) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at main.java.com.dining.App.main(App.java:18) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.5.2.RELEASE.jar:1.5.2.RELEASE]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [main.java.com.dining.dao.DynamoClientMapper$$EnhancerBySpringCGLIB$$f4ba10ad]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: endpoint cannot be null
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:154) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1147) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 22 common frames omitted
Caused by: java.lang.IllegalArgumentException: endpoint cannot be null
at com.amazonaws.util.RuntimeHttpUtils.toUri(RuntimeHttpUtils.java:182) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.util.RuntimeHttpUtils.toUri(RuntimeHttpUtils.java:171) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.AmazonWebServiceClient.toURI(AmazonWebServiceClient.java:238) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.AmazonWebServiceClient.setEndpoint(AmazonWebServiceClient.java:228) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.client.builder.AwsClientBuilder.setRegion(AwsClientBuilder.java:362) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.client.builder.AwsClientBuilder.configureMutableProperties(AwsClientBuilder.java:337) ~[aws-java-sdk-core-1.11.125.jar:na]
at com.amazonaws.client.builder.AwsSyncClientBuilder.build(AwsSyncClientBuilder.java:46) ~[aws-java-sdk-core-1.11.125.jar:na]
at main.java.com.dining.dao.DynamoClientMapper.<init>(DynamoClientMapper.java:32) ~[classes/:na]
at main.java.com.dining.dao.DynamoClientMapper$$EnhancerBySpringCGLIB$$f4ba10ad.<init>(<generated>) ~[classes/:na]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_121]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_121]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_121]
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:142) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 24 common frames omitted
我已经尝试制作另一个单独的database.properties文件,但Spring Boot也没有认识到这一点.我究竟做错了什么？
Sky*_*ker 20
您可以尝试在pom.xml文件的build部分中定义resources标记.设置资源目录所在的路径application.properties
<build>
<resources>
<resource>
<directory>resources</directory>
<targetPath>${project.build.outputDirectory}</targetPath>
<includes>
<include>application.properties</include>
</includes>
</resource>
</resources>
</build>
资源链接:https://stackoverflow.com/a/30595114/2293534
另一种方法:
如果您使用spring 3.X版本,则可以添加 @PropertySource("application.properties")
@Configuration
@PropertySource(value = "classpath:application.properties")
public class ApplicationConfig {
// more configuration ...
}
如果使用spring 4版本,则使用名为@PropertySources的新注释添加2个属性文件,该注释允许您声明重复的@PropertySource注释:
@PropertySources({
@PropertySource("default.properties"),
@PropertySource("overriding.properties")
})
详细信息在我的另一个答案中给出:https://stackoverflow.com/a/43659158/2293534
更新#1:
用以下类替换App.java类
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
//@SpringBootApplication
@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(applicationClass);
}
private static Class<Application> applicationClass = Application.class;
}
对于java.io.FileNotFoundException:
使用以下内容
@PropertySource(value = "database.properties", ignoreResourceNotFound = true)
更新#2:
我已按照以下步骤运行您的应用程序.它运行成功.
转到存在pom.xml的项目文件夹.
你在pom.xml上有一些错误和警告.我澄清了一切.
打开命令提示符并运行
mvn clean跑
mvn clean install最后
mvn spring-boot:run
然后在浏览器中运行" http:// localhost:8080 / "
它成功打开了项目.我也搜索过其他页面也成功打开了.
第一页如下所示 http://localhost:8080/
查看所有页面如下所示: http://localhost:8080/api/reviews
[{"id":1,"userName":"ychennay","reviewText":"这家餐厅太棒了!"},{"id":2,"userName":"david","reviewText":"这个餐厅还可以!"},{"id":3,"userName":"ben","reviewText":"这家餐厅很平庸!"},{"id":4,"userName":"leon", "reviewText":"这家餐厅很糟糕!"},{"id":5,"userName":"lawrence","reviewText":"这家餐馆很混乱!"}]
所以替换你的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.diningapp</groupId>
<artifactId>Dining</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<jackson.version>2.7.5</jackson.version>
<spring-version>4.3.7.RELEASE</spring-version>
<dynamodb-local.port>8000</dynamodb-local.port>
<dynamodb-local.endpoint>http://localhost:${dynamodb-local.port}</dynamodb-local.endpoint>
<spring-boot-version>1.5.2.RELEASE</spring-boot-version>
<aws-sdk-java-version>1.11.124</aws-sdk-java-version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- For UTF-8 support -->
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <!-- For UTF-8 support -->
</properties>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.7</source> <!-- Used java7 -->
<target>1.7</target> <!-- Used java7 -->
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot-version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>dynamodb-local-oregon</id>
<name>DynamoDB Local Release Repository</name>
<url>https://s3-us-west-2.amazonaws.com/dynamodb-local/release</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-releasetrain</artifactId>
<version>Hopper-SR10</version>
<type>pom</type>
<!-- <scope>import</scope> -->
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>${spring-boot-version}</version> <!-- You have missed to add this version -->
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>${spring-boot-version}</version> <!-- You have missed to add this version -->
<optional>true</optional>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring-boot-version}</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-dynamodb</artifactId>
<version>${aws-sdk-java-version}</version>
</dependency>
<dependency>
<groupId>com.github.derjust</groupId>
<artifactId>spring-data-dynamodb</artifactId>
<version>4.3.1</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-bom</artifactId>
<version>${aws-sdk-java-version}</version>
<type>pom</type>
<!-- <scope>import</scope> -->
<scope>provided</scope> <!-- changed import to provided -->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<version>${spring-boot-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version> <!-- You have missed to add this version -->
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>${spring-boot-version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.10</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
错误和解决方案:
问题1:
[警告] org.springframework.data:spring-data-releasetrain:pom的'dependencies.dependency.scope'必须是[提供,编译,运行时,测试,系统]之一,但是'import'.@第70行,第18栏
解决方案1:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-releasetrain</artifactId>
<version>Hopper-SR10</version>
<type>pom</type>
<!-- <scope>import</scope> -->
<scope>provided</scope> <!-- changed import to provided -->
</dependency>
问题2:
[错误] org.springframework.boot的'dependencies.dependency.version':spring-boot-devtools:jar丢失了.@第73行,第19栏
解决方案2:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>${spring-boot-version}</version> <!-- You have missed to add this version -->
<optional>true</optional>
</dependency>
问题3:
orr.springframework.boot的[错误]'dependencies.dependency.version':spring-boot-configuration-processor:jar丢失了.@第78行,第19栏
解决方案3:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>${spring-boot-version}</version> <!-- You have missed to add this version -->
<optional>true</optional>
</dependency>
问题#4:
[警告] com.amazonaws的'dependencies.dependency.scope':aws-java-sdk-bom:pom必须是[提供,编译,运行时,测试,系统]之一,但是'import'.@第105行,第18栏
解决方法4:
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-bom</artifactId>
<version>${aws-sdk-java-version}</version>
<type>pom</type>
<!-- <scope>import</scope> -->
<scope>provided</scope> <!-- changed import to provided -->
</dependency>
问题#5:
错误的[错误]'dependencies.dependency.version':缺少mysql-connector-java:jar.@第148行,第19栏
解决方案#5:
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version> <!-- You have missed to add this version -->
</dependency>
- @YuChen pom.xml文件中缺少某些版本.我已经解决了所有并成功运行.所有输出都附有.所以,请更换您的pom.xml,如果出现任何问题,请告诉我. (3认同)
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