1.参考教程: http://412887952-qq-com.iteye.com/category/356333?page=8
8. 使用JPA保存数据【从零开始学Spring Boot】
注意问题:
:问题1:需要安装一个mysql
问题2:mysql5.7以上版本,必须配置ssl
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes
问题3:mysql5.7以上,naming-strategy配置也改变了
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
问题4:application.properties配置项,记住删掉末尾的空格(巨坑)
问题5: spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes
test是数据库名,你要自己在mysql中创建一个数据库
解决方法:
1. ctrl+R 打开cmd命令行
2. mysql -u root -p 进入mysql输入密码
3. create database test;
问题6:access denied(数据库不允许远程访问)
解决方法: 1.登录数据库, mysql -u root -p
2.输入你想授权的账号名(替换myuser)和密码(替换mypassword):
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
3.输入命令: FLUSH PRIVILEGES; 然后就能访问了
application.properties配置示例:
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes spring.datasource.username = admin spring.datasource.password = admin spring.datasource.driverClassName = com.mysql.jdbc.Driver # Specify the DBMS spring.jpa.database = MYSQL # 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 = update # Naming strategy spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl # stripped before adding them to the entity manager) spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
POM.XML配置示例:
<?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>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>demo</name> <description>Demo project for Spring Boot</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-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
28. SpringBoot启动时的Banner设置【从零开始学Spring Boot】
注意问题
可以在代码中配置关闭banner,也可以在properties中配置
spring.main.banner-mode=off
29. Spring boot 文件上传(多文件上传)【从零开始学Spring Boot】
注意问题
文件上传到指定路径,一定要是文件,如果是目录就会出现拒绝访问。
String path="F:/test/"; File savedir = new File(path); if (!savedir.exists()) { savedir.mkdirs(); } File myFile=new File(path+"1.txt"); BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(myFile));
33. Spring Boot 监控和管理生产环境【从零开始学Spring Boot】
配置actuator需要security权限
可以再properties文件中设置关闭
management.security.enabled=false
1.参考教程: http://412887952-qq-com.iteye.com/category/356333?page=8
8. 使用JPA保存数据【从零开始学Spring Boot】
注意问题:
:问题1:需要安装一个mysql
问题2:mysql5.7以上版本,必须配置ssl
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes
问题3:mysql5.7以上,naming-strategy配置也改变了
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
问题4:application.properties配置项,记住删掉末尾的空格(巨坑)
问题5: spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes
test是数据库名,你要自己在mysql中创建一个数据库
解决方法:
1. ctrl+R 打开cmd命令行
2. mysql -u root -p 进入mysql输入密码
3. create database test;
问题6:access denied(数据库不允许远程访问)
解决方法: 1.登录数据库, mysql -u root -p
2.输入你想授权的账号名(替换myuser)和密码(替换mypassword):
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
3.输入命令: FLUSH PRIVILEGES; 然后就能访问了
application.properties配置示例:
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes spring.datasource.username = admin spring.datasource.password = admin spring.datasource.driverClassName = com.mysql.jdbc.Driver # Specify the DBMS spring.jpa.database = MYSQL # 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 = update # Naming strategy spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl # stripped before adding them to the entity manager) spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
POM.XML配置示例:
<?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>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>demo</name> <description>Demo project for Spring Boot</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-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
28. SpringBoot启动时的Banner设置【从零开始学Spring Boot】
注意问题
可以在代码中配置关闭banner,也可以在properties中配置
spring.main.banner-mode=off
29. Spring boot 文件上传(多文件上传)【从零开始学Spring Boot】
注意问题
文件上传到指定路径,一定要是文件,如果是目录就会出现拒绝访问。
String path="F:/test/"; File savedir = new File(path); if (!savedir.exists()) { savedir.mkdirs(); } File myFile=new File(path+"1.txt"); BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(myFile));
33. Spring Boot 监控和管理生产环境【从零开始学Spring Boot】
配置actuator需要security权限
可以再properties文件中设置关闭
management.security.enabled=false1.参考教程: http://412887952-qq-com.iteye.com/category/356333?page=8 8. 使用JPA保存数据【从零开始学Spring Boot】 :问题1:需要安装一个mysql 问题2:mysql5.7以上版本,必须配置ssl
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=yes问题3:mysql5.7以上,naming-strategy配置也改变了
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl问题4: application.properties配置项,记住删掉末尾的空格(巨坑) 问题5: spring.datasource.url = jdbc:mysql://localhost:3306/ test ?characterEncoding=utf8&useSSL=yes test是数据库名,你要自己在mysql中创建一个数据库 解决方法: