不分库，只分表+读写分离案例

sjdbc-sharding-table-read-write-springboot/pom.xml

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+<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.cxytiandi</groupId>
+  <artifactId>sjdbc-sharding-table-read-write-springboot</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>sjdbc-sharding-table-read-write-springboot</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+ <parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.0.6.RELEASE</version>
+		<relativePath />
+	</parent>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.mybatis.spring.boot</groupId>
+			<artifactId>mybatis-spring-boot-starter</artifactId>
+			<version>2.0.1</version>
+		</dependency>
+
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.alibaba</groupId>
+			<artifactId>druid-spring-boot-starter</artifactId>
+			<version>1.1.16</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.shardingsphere</groupId>
+			<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
+			<version>4.0.0-RC1</version>
+		</dependency>
+
+		<!-- <dependency>
+			<groupId>io.shardingjdbc</groupId>
+			<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
+			<version>2.0.0.M3</version>
+		</dependency> -->
+  </dependencies>
+</project>

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/ShardingTableReadWriteApplication.java

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+package com.cxytiandi.sharding;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * 不分库，只分表+读写分离案例
+ * @author yinjihuan
+ */
+@SpringBootApplication
+public class ShardingTableReadWriteApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(ShardingTableReadWriteApplication.class, args);
+	}
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/algorithm/MyPreciseShardingAlgorithm.java

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+package com.cxytiandi.sharding.algorithm;
+
+import java.util.Collection;
+
+import org.apache.shardingsphere.api.sharding.standard.PreciseShardingAlgorithm;
+import org.apache.shardingsphere.api.sharding.standard.PreciseShardingValue;
+
+/**
+ * 自定义分片算法
+ * 
+ * @author yinjihuan
+ *
+ */
+public class MyPreciseShardingAlgorithm implements PreciseShardingAlgorithm<Long> {
+
+	@Override
+	public String doSharding(Collection<String> availableTargetNames, PreciseShardingValue<Long> shardingValue) {
+		for (String tableName : availableTargetNames) {
+			if (tableName.endsWith(shardingValue.getValue() % 4 + "")) {
+				return tableName;
+			}
+		}
+		throw new IllegalArgumentException();
+	}
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/controller/LouDongController.java

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+package com.cxytiandi.sharding.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.cxytiandi.sharding.po.LouDong;
+import com.cxytiandi.sharding.service.LouDongService;
+
+@RestController
+public class LouDongController {
+
+	@Autowired
+	private LouDongService louDongService;
+
+	@GetMapping("/lds")
+	public Object list() {
+		return louDongService.list();
+	}
+
+	@GetMapping("/ld/add")
+	public Object add() {
+		for (long i = 0; i < 10; i++) {
+			LouDong louDong = new LouDong();
+			louDong.setId(i+"a");
+			louDong.setCity("深圳");
+			louDong.setRegion("宝安");
+			louDong.setName("李四");
+			louDong.setLdNum("A");
+			louDong.setUnitNum("2");
+			louDongService.addLouDong(louDong);
+		}
+		return "success";
+	}
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/controller/UserController.java

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+package com.cxytiandi.sharding.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.cxytiandi.sharding.po.User;
+import com.cxytiandi.sharding.service.UserService;
+
+@RestController
+public class UserController {
+
+	@Autowired
+	private UserService userService;
+
+	@GetMapping("/users")
+	public Object list() {
+		return userService.list();
+	}
+
+	@GetMapping("/add")
+	public Object add() {
+		for (long i = 0; i < 100; i++) {
+			User user = new User();
+			user.setId(i);
+			user.setCity("深圳");
+			user.setName("李四");
+			userService.add(user);
+		}
+		return "success";
+	}
+
+	@GetMapping("/users/{id}")
+	public Object get(@PathVariable Long id) {
+		return userService.findById(id);
+	}
+
+	@GetMapping("/users/query")
+	public Object get(String name) {
+		return userService.findByName(name);
+	}
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/po/LouDong.java

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+package com.cxytiandi.sharding.po;
+
+/**
+ * 不分表
+ * @author yinjihuan
+ *
+ */
+public class LouDong {
+
+	private String id;
+
+	private String city;
+
+	private String region;
+
+	private String name;
+
+	private String ldNum;
+
+	private String unitNum;
+
+	public String getId() {
+		return id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getCity() {
+		return city;
+	}
+
+	public void setCity(String city) {
+		this.city = city;
+	}
+
+	public String getRegion() {
+		return region;
+	}
+
+	public void setRegion(String region) {
+		this.region = region;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getLdNum() {
+		return ldNum;
+	}
+
+	public void setLdNum(String ldNum) {
+		this.ldNum = ldNum;
+	}
+
+	public String getUnitNum() {
+		return unitNum;
+	}
+
+	public void setUnitNum(String unitNum) {
+		this.unitNum = unitNum;
+	}
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/po/User.java

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+package com.cxytiandi.sharding.po;
+
+import java.io.Serializable;
+
+/**
+ * 分表
+ * @author yinjihuan
+ *
+ */
+public class User implements Serializable {
+
+	private static final long serialVersionUID = -1205226416664488559L;
+
+	private Long id;
+
+	private String city = "";
+
+	private String name = "";
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getCity() {
+		return city;
+	}
+
+	public void setCity(String city) {
+		this.city = city;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/repository/LouDongRepository.java

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+package com.cxytiandi.sharding.repository;
+
+import java.util.List;
+import org.apache.ibatis.annotations.Mapper;
+import com.cxytiandi.sharding.po.LouDong;
+
+
+@Mapper
+public interface LouDongRepository {
+
+	Long addLouDong(LouDong louDong);
+
+	List<LouDong> list();
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/repository/UserRepository.java

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+package com.cxytiandi.sharding.repository;
+
+import java.util.List;
+
+import org.apache.ibatis.annotations.Mapper;
+
+import com.cxytiandi.sharding.po.User;
+
+
+@Mapper
+public interface UserRepository {
+
+	Long addUser(User user);
+
+	List<User> list();
+
+	User findById(Long id);
+
+	User findByName(String name);
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/service/LouDongService.java

@@ -0,0 +1,13 @@
+package com.cxytiandi.sharding.service;
+
+import java.util.List;
+
+import com.cxytiandi.sharding.po.LouDong;
+
+public interface LouDongService {
+
+	List<LouDong> list();
+
+	Long addLouDong(LouDong louDong);
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/service/LouDongServiceImpl.java

@@ -0,0 +1,27 @@
+package com.cxytiandi.sharding.service;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.cxytiandi.sharding.po.LouDong;
+import com.cxytiandi.sharding.repository.LouDongRepository;
+
+@Service
+public class LouDongServiceImpl implements LouDongService {
+
+	@Autowired
+	private LouDongRepository louDongRepository;
+
+	@Override
+	public List<LouDong> list() {
+		return louDongRepository.list();
+	}
+
+	@Override
+	public Long addLouDong(LouDong louDong) {
+		return louDongRepository.addLouDong(louDong);
+	}
+
+}

sjdbc-sharding-table-read-write-springboot/src/main/java/com/cxytiandi/sharding/service/UserService.java

@@ -0,0 +1,17 @@
+package com.cxytiandi.sharding.service;
+
+import java.util.List;
+
+import com.cxytiandi.sharding.po.User;
+
+public interface UserService {
+
+	List<User> list();
+
+	Long add(User user);
+
+	User findById(Long id);
+
+	User findByName(String name);
+
+}