我使用内存中的 H2 数据库构建了这个应用程序。
如果我运行 mvn spring-boot:run,它会在端口 8081 上启动 Tomcat,我可以使用 url localhost:8081/Patients 就好了,并且能够与数据库交互。
如果我运行 mvn package 然后 java -jar 来自 /target 的 jar 文件,它会在端口 8081 上启动 Tomcat,并且上面的 url 返回 404 .显示的消息好像没有找到资源,这是一个jsp文件。
There was an unexpected error (type=Not Found, status=404).
/Patients/WEB-INF/views/patient/welcome.jsp
我正在尝试构建可以继续运行的应用程序,但不确定我缺少什么。
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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>Paulo</groupId>
<artifactId>Patients</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Patients</name>
<description></description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.11.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.11.Final</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<resources>
<resource>
<directory>src</directory>
</resource>
</resources>
</build>
</project>
应用程序属性
#spring.datasource.url = jdbc:mysql://localhost:3306/pauloaraujo?createDatabaseIfNotExist=true
#spring.datasource.driverClassName=com.mysql.jdbc.Driver
#spring.datasource.username = root
#spring.datasource.password = pauloaraujo
jdbc.driverClassName=org.h2.Driver
jdbc.url=jdbc:h2:mem:myDb;DB_CLOSE_DELAY=-1
server.port=8081
server.contextPath=/Patients
# Show or not log for each sql query
spring.jpa.show-sql = true
# Hibernate ddl auto (create, create-drop, update)
spring.jpa.hibernate.ddl-auto = create
# Naming strategy
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
# Use spring.jpa.properties.* for Hibernate native properties (the prefix is
# stripped before adding them to the entity manager)
# The SQL dialect makes Hibernate generate better SQL for the chosen database
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.mvc.view.prefix: /WEB-INF/views/
spring.mvc.view.suffix: .jsp
编辑:
我了解到 Tomcat 不会将可执行 jar 与 JSP 一起提供,然后我将我的包装更改为 WAR。
我运行了 java -jar mywar.war,结果是 Tomcat 在端口 8080 上,消息是
There was an unexpected error (type=Not Found, status=404).
No message available
最佳答案
检查日志,如果有的话,否则添加logback,这样你就会有日志。
我注意到的几件事:
删除
<scope>provided</scope>
来自 Tomcat starter 和来自 tomcat-embed-jasper,这些在编译范围内是必需的。从您的 Spring 依赖项中删除版本号,父级在那里提供版本。
Tomcat 无法处理 jsps in runnable jar .阅读“可执行 war ”(您需要 war 包装)。
关于java - Spring Boot 运行良好,但不是它的 Jar?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47616207/