feat: Add a demo of SpringBoot #10, Refer to Other Information to p…

…rovide demo
oceanbase · Apr 26, 2024 · ffe2ec6 · ffe2ec6
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diff --git a/java/oceanbase-spring-boot-mysql-jpa/README-CN.md b/java/oceanbase-spring-boot-mysql-jpa/README-CN.md
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+# Spring Boot 连接 OceanBase 指南（使用 Spring Data JPA）
+
+[English](README.md) | 简体中文
+
+本文介绍如何通过 OceanBase 官方 SpringBoot 连接示例连接 OceanBase 数据库。
+由于 OceanBase 支持 MySQL 模式与 Oracle 模式，因此可以使用 MySQL 驱动连接 OceanBase。
+## 快速开始
+
+### 在 pom.xml 中首先加入 Spring Boot 与 Spring Data JPA 相关的驱动, 以及 MySQL 驱动，pom.xml 参考[OceanBase SpringBoot 连接示例](https://www.oceanbase.com/docs/community-observer-cn-10000000000900914) 示例。
+
+```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.oceanbase.samples</groupId>
+  <artifactId>oceanbase-spring-boot-mysql-jpa</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <parent>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-parent</artifactId>
+    <version>2.0.1.RELEASE</version>
+  </parent>
+  <name>oceanbase-spring-boot</name>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-web</artifactId>
+      <exclusions>
+        <exclusion>
+          <artifactId>spring-boot-starter-json</artifactId>
+          <groupId>org.springframework.boot</groupId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+    <dependency>
+      <groupId>mysql</groupId>
+      <artifactId>mysql-connector-java</artifactId>
+      <version>8.0.25</version>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-data-jpa</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+      <version>2.8.5</version>
+    </dependency>
+  </dependencies>
+</project>
+```
+
+### 在 application.yml 文件加入数据库连接信息等。
+
+```yaml
+server:
+  port: 8081
+spring:
+  jpa:
+    database: mysql
+    show-sql: true
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://host:port/test?characterEncoding=UTF-8
+    username: *****
+    password: *****
+#spring.jpa.hibernate.ddl-auto=update
+jackson:
+  serialization:
+    indent_output: true
+```
+### 测试用例：
+
+#### 1.定义简单实体：
+```java
+package com.oceanbase.samples.entity;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Objects;
+
+/*
+ * CREATE TABLE TEST(id integer, name varchar2(50))
+ *
+ */
+@Entity
+@Table( name = "test" )
+public class TestEntity implements Serializable {
+
+  private static final long serialVersionUID = -6578740021873269176L;
+
+  @Id
+  // @GeneratedValue(strategy=GenerationType.AUTO) //oracle 没有自增策略，添加该注解可以自动生成一个序列，提供自增主键，若数据库已有相关序列，可以忽 //略该注解。
+  @Column(name = "id")
+  private Integer testId;
+
+  @Column( name = "name" )
+  private String TestName;
+
+
+
+  public TestEntity(){
+
+  }
+
+  public TestEntity(String bauer) {
+    this.TestName = bauer;
+  }
+
+
+  public Integer getTestId() {
+    return testId;
+  }
+
+  public void setTestId(Integer testId) {
+    this.testId = testId;
+  }
+
+  public String getTestName() {
+    return TestName;
+  }
+
+  public void setTestName(String testName) {
+    TestName = testName;
+  }
+
+  @Override
+  public String toString() {
+    return "TestEntity{" +
+      "testId=" + testId +
+      ", TestName='" + TestName + '\'' +
+      '}';
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    TestEntity that = (TestEntity) o;
+    return Objects.equals(testId, that.testId) && Objects.equals(TestName, that.TestName);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(testId, TestName);
+  }
+}
+```
+#### 2.创建简单查询：
+```java
+package com.oceanbase.samples.repository;
+
+import com.oceanbase.samples.entity.TestEntity;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface TestEntityRepository extends CrudRepository<TestEntity, Integer> {
+  List<TestEntity> findByTestName(String lastName);
+
+  List<TestEntity> findByTestNameContaining(String testName);
+
+  TestEntity findById(int id);
+}
+```
+
+#### 3.在 controller 创建测试用例，测试增删改查：
+```java
+package com.oceanbase.samples.controller;
+
+import com.oceanbase.samples.entity.TestEntity;
+import com.oceanbase.samples.repository.TestEntityRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+
+@RestController
+@RequestMapping("/")
+public class TestController {
+  private static final Logger log = LoggerFactory.getLogger(TestController.class);
+
+  @Autowired
+  private TestEntityRepository testEntityRepository;
+
+  @PostMapping("/save")
+  public Boolean save(@RequestBody TestEntity testSaveEntity) {
+    TestEntity resultEntity = testEntityRepository.save(testSaveEntity);
+    log.info("save result: {}", resultEntity);
+    return resultEntity != null;
+  }
+
+  @GetMapping("/{id}")
+  public TestEntity findById(@PathVariable("id") int id) {
+    log.info("find by id: {}", id);
+    TestEntity resultEntity = testEntityRepository.findById(id);
+    log.info("find result: {}", resultEntity);
+    return resultEntity;
+  }
+
+  @GetMapping("/findAll")
+  public List<TestEntity> findAll() {
+    log.info("find all");
+    return StreamSupport.stream(testEntityRepository.findAll().spliterator(), false)
+      .filter(Objects::nonNull)
+      .peek(entity -> log.info(entity.toString()))
+      .collect(Collectors.toList());
+  }
+
+  @GetMapping("/findByName")
+  public List<TestEntity> findByName(@RequestParam("name") String name) {
+    log.info("find by name: {}", name);
+    return testEntityRepository.findByTestNameContaining(name);
+  }
+
+  @DeleteMapping("/{id}")
+  public void deleteById(@PathVariable("id") int id) {
+    log.info("delete by id: {}", id);
+    testEntityRepository.deleteById(id);
+  }
+
+  @PutMapping("/update")
+  public void update(@RequestBody TestEntity testUpdateEntity) {
+    log.info("update: {}", testUpdateEntity);
+    testEntityRepository.save(testUpdateEntity);
+  }
+
+}
+```
+
+#### 4.创建应用程序类，并运行：
+```java
+package com.oceanbase.samples;
+
+import com.oceanbase.samples.entity.TestEntity;
+import com.oceanbase.samples.repository.TestEntityRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class HelloOceanBaseBootApplication {
+
+    public static void main( String[] args ) {
+        SpringApplication.run(HelloOceanBaseBootApplication.class, args);
+    }
+
+}
+```
+
+修改代码中的连接信息，之后你就可以直接使用 run.sh 运行示例代码。
+
+```bash
+sh run.sh
+```