service -服务
- 商品服务 item service,端口8001
- 用户服务 user service,端口8101
- 订单服务 order service,端口8201
commons通用我的项目
新建maven我的项目
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>cn.tedu</groupId> <artifactId>sp01-commons</artifactId> <version>0.0.1-SNAPSHOT</version> <name>sp01-commons</name> <dependencies> <dependency> <groupId>com.fasterxml.jackson.module</groupId> <artifactId>jackson-module-parameter-names</artifactId> <version>2.9.8</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.datatype</groupId> <artifactId>jackson-datatype-jdk8</artifactId> <version>2.9.8</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.datatype</groupId> <artifactId>jackson-datatype-jsr310</artifactId> <version>2.9.8</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.datatype</groupId> <artifactId>jackson-datatype-guava</artifactId> <version>2.9.8</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.6</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.26</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.9</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build></project>java 源文件
pojo
- Item
package cn.tedu.sp01.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;@Data@NoArgsConstructor@AllArgsConstructorpublic class Item { private Integer id; private String name; private Integer number;}- User
package cn.tedu.sp01.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;@Data@NoArgsConstructor@AllArgsConstructorpublic class User { private Integer id; private String username; private String password;}- Order
package cn.tedu.sp01.pojo;import java.util.List;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;@Data@NoArgsConstructor@AllArgsConstructorpublic class Order { private String id; private User user; private List<Item> items;}service
- ItemService
package cn.tedu.sp01.service;import java.util.List;import cn.tedu.sp01.pojo.Item;public interface ItemService { List<Item> getItems(String orderId); void decreaseNumbers(List<Item> list);}- UserService
package cn.tedu.sp01.service;import cn.tedu.sp01.pojo.User;public interface UserService { User getUser(Integer id); void addScore(Integer id, Integer score);}- OrderService
package cn.tedu.sp01.service;import cn.tedu.sp01.pojo.Order;public interface OrderService { Order getOrder(String orderId); void addOrder(Order order);}Util
- CookieUtil
package cn.tedu.web.util;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class CookieUtil { /** * @param response * @param name * @param value * @param maxAge */ public static void setCookie(HttpServletResponse response, String name, String value, String domain, String path, int maxAge) { Cookie cookie = new Cookie(name, value); if(domain != null) { cookie.setDomain(domain); } cookie.setPath(path); cookie.setMaxAge(maxAge); response.addCookie(cookie); } public static void setCookie(HttpServletResponse response, String name, String value, int maxAge) { setCookie(response, name, value, null, "/", maxAge); } public static void setCookie(HttpServletResponse response, String name, String value) { setCookie(response, name, value, null, "/", 3600); } public static void setCookie(HttpServletResponse response, String name) { setCookie(response, name, "", null, "/", 3600); } /** * @param request * @param name * @return */ public static String getCookie(HttpServletRequest request, String name) { String value = null; Cookie[] cookies = request.getCookies(); if (null != cookies) { for (Cookie cookie : cookies) { if (cookie.getName().equals(name)) { value = cookie.getValue(); } } } return value; } /** * @param response * @param name * @return */ public static void removeCookie(HttpServletResponse response, String name, String domain, String path) { setCookie(response, name, "", domain, path, 0); }}- JsonUtil
package cn.tedu.web.util;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.Writer;import java.math.BigDecimal;import java.math.BigInteger;import java.net.URL;import java.nio.charset.StandardCharsets;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.List;import org.apache.commons.lang3.StringUtils;import com.fasterxml.jackson.annotation.JsonInclude;import com.fasterxml.jackson.core.JsonGenerator;import com.fasterxml.jackson.core.JsonParser;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.core.type.TypeReference;import com.fasterxml.jackson.databind.DeserializationFeature;import com.fasterxml.jackson.databind.JsonNode;import com.fasterxml.jackson.databind.ObjectMapper;import com.fasterxml.jackson.databind.SerializationFeature;import com.fasterxml.jackson.databind.node.ObjectNode;import com.fasterxml.jackson.datatype.guava.GuavaModule;import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;import lombok.extern.slf4j.Slf4j;@Slf4jpublic class JsonUtil { private static ObjectMapper mapper; private static JsonInclude.Include DEFAULT_PROPERTY_INCLUSION = JsonInclude.Include.NON_DEFAULT; private static boolean IS_ENABLE_INDENT_OUTPUT = false; private static String CSV_DEFAULT_COLUMN_SEPARATOR = ","; static { try { initMapper(); configPropertyInclusion(); configIndentOutput(); configCommon(); } catch (Exception e) { log.error("jackson config error", e); } } private static void initMapper() { mapper = new ObjectMapper(); } private static void configCommon() { config(mapper); } private static void configPropertyInclusion() { mapper.setSerializationInclusion(DEFAULT_PROPERTY_INCLUSION); } private static void configIndentOutput() { mapper.configure(SerializationFeature.INDENT_OUTPUT, IS_ENABLE_INDENT_OUTPUT); } private static void config(ObjectMapper objectMapper) { objectMapper.enable(JsonGenerator.Feature.WRITE_BIGDECIMAL_AS_PLAIN); objectMapper.enable(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT); objectMapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY); objectMapper.enable(DeserializationFeature.FAIL_ON_READING_DUP_TREE_KEY); objectMapper.enable(DeserializationFeature.FAIL_ON_NUMBERS_FOR_ENUMS); objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); objectMapper.disable(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES); objectMapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS); objectMapper.enable(JsonParser.Feature.ALLOW_COMMENTS); objectMapper.disable(JsonGenerator.Feature.ESCAPE_NON_ASCII); objectMapper.enable(JsonGenerator.Feature.IGNORE_UNKNOWN); objectMapper.enable(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES); objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")); objectMapper.enable(JsonParser.Feature.ALLOW_SINGLE_QUOTES); objectMapper.registerModule(new ParameterNamesModule()); objectMapper.registerModule(new Jdk8Module()); objectMapper.registerModule(new JavaTimeModule()); objectMapper.registerModule(new GuavaModule()); } public static void setSerializationInclusion(JsonInclude.Include inclusion) { DEFAULT_PROPERTY_INCLUSION = inclusion; configPropertyInclusion(); } public static void setIndentOutput(boolean isEnable) { IS_ENABLE_INDENT_OUTPUT = isEnable; configIndentOutput(); } public static <V> V from(URL url, Class<V> c) { try { return mapper.readValue(url, c); } catch (IOException e) { log.error("jackson from error, url: {}, type: {}", url.getPath(), c, e); return null; } } public static <V> V from(InputStream inputStream, Class<V> c) { try { return mapper.readValue(inputStream, c); } catch (IOException e) { log.error("jackson from error, type: {}", c, e); return null; } } public static <V> V from(File file, Class<V> c) { try { return mapper.readValue(file, c); } catch (IOException e) { log.error("jackson from error, file path: {}, type: {}", file.getPath(), c, e); return null; } } public static <V> V from(Object jsonObj, Class<V> c) { try { return mapper.readValue(jsonObj.toString(), c); } catch (IOException e) { log.error("jackson from error, json: {}, type: {}", jsonObj.toString(), c, e); return null; } } public static <V> V from(String json, Class<V> c) { try { return mapper.readValue(json, c); } catch (IOException e) { log.error("jackson from error, json: {}, type: {}", json, c, e); return null; } } public static <V> V from(URL url, TypeReference<V> type) { try { return mapper.readValue(url, type); } catch (IOException e) { log.error("jackson from error, url: {}, type: {}", url.getPath(), type, e); return null; } } public static <V> V from(InputStream inputStream, TypeReference<V> type) { try { return mapper.readValue(inputStream, type); } catch (IOException e) { log.error("jackson from error, type: {}", type, e); return null; } } public static <V> V from(File file, TypeReference<V> type) { try { return mapper.readValue(file, type); } catch (IOException e) { log.error("jackson from error, file path: {}, type: {}", file.getPath(), type, e); return null; } } public static <V> V from(Object jsonObj, TypeReference<V> type) { try { return mapper.readValue(jsonObj.toString(), type); } catch (IOException e) { log.error("jackson from error, json: {}, type: {}", jsonObj.toString(), type, e); return null; } } public static <V> V from(String json, TypeReference<V> type) { try { return mapper.readValue(json, type); } catch (IOException e) { log.error("jackson from error, json: {}, type: {}", json, type, e); return null; } } public static <V> String to(List<V> list) { try { return mapper.writeValueAsString(list); } catch (JsonProcessingException e) { log.error("jackson to error, obj: {}", list, e); return null; } } public static <V> String to(V v) { try { return mapper.writeValueAsString(v); } catch (JsonProcessingException e) { log.error("jackson to error, obj: {}", v, e); return null; } } public static <V> void toFile(String path, List<V> list) { try (Writer writer = new FileWriter(new File(path), true)) { mapper.writer().writeValues(writer).writeAll(list); writer.flush(); } catch (Exception e) { log.error("jackson to file error, path: {}, list: {}", path, list, e); } } public static <V> void toFile(String path, V v) { try (Writer writer = new FileWriter(new File(path), true)) { mapper.writer().writeValues(writer).write(v); writer.flush(); } catch (Exception e) { log.error("jackson to file error, path: {}, obj: {}", path, v, e); } } public static String getString(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).toString(); } else { return null; } } catch (IOException e) { log.error("jackson get string error, json: {}, key: {}", json, key, e); return null; } } public static Integer getInt(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).intValue(); } else { return null; } } catch (IOException e) { log.error("jackson get int error, json: {}, key: {}", json, key, e); return null; } } public static Long getLong(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).longValue(); } else { return null; } } catch (IOException e) { log.error("jackson get long error, json: {}, key: {}", json, key, e); return null; } } public static Double getDouble(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).doubleValue(); } else { return null; } } catch (IOException e) { log.error("jackson get double error, json: {}, key: {}", json, key, e); return null; } } public static BigInteger getBigInteger(String json, String key) { if (StringUtils.isEmpty(json)) { return new BigInteger(String.valueOf(0.00)); } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).bigIntegerValue(); } else { return null; } } catch (IOException e) { log.error("jackson get biginteger error, json: {}, key: {}", json, key, e); return null; } } public static BigDecimal getBigDecimal(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).decimalValue(); } else { return null; } } catch (IOException e) { log.error("jackson get bigdecimal error, json: {}, key: {}", json, key, e); return null; } } public static boolean getBoolean(String json, String key) { if (StringUtils.isEmpty(json)) { return false; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).booleanValue(); } else { return false; } } catch (IOException e) { log.error("jackson get boolean error, json: {}, key: {}", json, key, e); return false; } } public static byte[] getByte(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } try { JsonNode node = mapper.readTree(json); if (null != node) { return node.get(key).binaryValue(); } else { return null; } } catch (IOException e) { log.error("jackson get byte error, json: {}, key: {}", json, key, e); return null; } } public static <T> ArrayList<T> getList(String json, String key) { if (StringUtils.isEmpty(json)) { return null; } String string = getString(json, key); return from(string, new TypeReference<ArrayList<T>>() {}); } public static <T> String add(String json, String key, T value) { try { JsonNode node = mapper.readTree(json); add(node, key, value); return node.toString(); } catch (IOException e) { log.error("jackson add error, json: {}, key: {}, value: {}", json, key, value, e); return json; } } private static <T> void add(JsonNode jsonNode, String key, T value) { if (value instanceof String) { ((ObjectNode) jsonNode).put(key, (String) value); } else if (value instanceof Short) { ((ObjectNode) jsonNode).put(key, (Short) value); } else if (value instanceof Integer) { ((ObjectNode) jsonNode).put(key, (Integer) value); } else if (value instanceof Long) { ((ObjectNode) jsonNode).put(key, (Long) value); } else if (value instanceof Float) { ((ObjectNode) jsonNode).put(key, (Float) value); } else if (value instanceof Double) { ((ObjectNode) jsonNode).put(key, (Double) value); } else if (value instanceof BigDecimal) { ((ObjectNode) jsonNode).put(key, (BigDecimal) value); } else if (value instanceof BigInteger) { ((ObjectNode) jsonNode).put(key, (BigInteger) value); } else if (value instanceof Boolean) { ((ObjectNode) jsonNode).put(key, (Boolean) value); } else if (value instanceof byte[]) { ((ObjectNode) jsonNode).put(key, (byte[]) value); } else { ((ObjectNode) jsonNode).put(key, to(value)); } } public static String remove(String json, String key) { try { JsonNode node = mapper.readTree(json); ((ObjectNode) node).remove(key); return node.toString(); } catch (IOException e) { log.error("jackson remove error, json: {}, key: {}", json, key, e); return json; } } public static <T> String update(String json, String key, T value) { try { JsonNode node = mapper.readTree(json); ((ObjectNode) node).remove(key); add(node, key, value); return node.toString(); } catch (IOException e) { log.error("jackson update error, json: {}, key: {}, value: {}", json, key, value, e); return json; } } public static String format(String json) { try { JsonNode node = mapper.readTree(json); return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(node); } catch (IOException e) { log.error("jackson format json error, json: {}", json, e); return json; } } public static boolean isJson(String json) { try { mapper.readTree(json); return true; } catch (Exception e) { log.error("jackson check json error, json: {}", json, e); return false; } } private static InputStream getResourceStream(String name) { return JsonUtil.class.getClassLoader().getResourceAsStream(name); } private static InputStreamReader getResourceReader(InputStream inputStream) { if (null == inputStream) { return null; } return new InputStreamReader(inputStream, StandardCharsets.UTF_8); }}- JsonResult
package cn.tedu.web.util;import lombok.Getter;import lombok.Setter;@Getter@Setterpublic class JsonResult<T> { /** 胜利 */ public static final int SUCCESS = 200; /** 没有登录 */ public static final int NOT_LOGIN = 400; /** 产生异样 */ public static final int EXCEPTION = 401; /** 零碎谬误 */ public static final int SYS_ERROR = 402; /** 参数谬误 */ public static final int PARAMS_ERROR = 403; /** 不反对或曾经废除 */ public static final int NOT_SUPPORTED = 410; /** AuthCode谬误 */ public static final int INVALID_AUTHCODE = 444; /** 太频繁的调用 */ public static final int TOO_FREQUENT = 445; /** 未知的谬误 */ public static final int UNKNOWN_ERROR = 499; private int code; private String msg; private T data; public static JsonResult build() { return new JsonResult(); } public static JsonResult build(int code) { return new JsonResult().code(code); } public static JsonResult build(int code, String msg) { return new JsonResult<String>().code(code).msg(msg); } public static <T> JsonResult<T> build(int code, T data) { return new JsonResult<T>().code(code).data(data); } public static <T> JsonResult<T> build(int code, String msg, T data) { return new JsonResult<T>().code(code).msg(msg).data(data); } public JsonResult<T> code(int code) { this.code = code; return this; } public JsonResult<T> msg(String msg) { this.msg = msg; return this; } public JsonResult<T> data(T data) { this.data = data; return this; } public static JsonResult ok() { return build(SUCCESS); } public static JsonResult ok(String msg) { return build(SUCCESS, msg); } public static <T> JsonResult<T> ok(T data) { return build(SUCCESS, data); } public static JsonResult err() { return build(EXCEPTION); } public static JsonResult err(String msg) { return build(EXCEPTION, msg); } @Override public String toString() { return JsonUtil.to(this); }}item service 商品服务
- 新建我的项目
- 配置依赖 pom.xml
- 配置 application.yml
- 配置主程序
- 编写代码
新建SpringBoot起步我的项目
抉择依赖项
- 只抉择 web
pom.xml
- 要增加sp01-commons我的项目依赖
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.1.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>cn.tedu</groupId> <artifactId>sp02-itemservice</artifactId> <version>0.0.1-SNAPSHOT</version> <name>sp02-itemservice</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>cn.tedu</groupId> <artifactId>sp01-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>application.yml
spring: application: name: item-service server: port: 8001主程序
- 默认代码，不须要批改
package cn.tedu.sp02;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class Sp02ItemserviceApplication { public static void main(String[] args) { SpringApplication.run(Sp02ItemserviceApplication.class, args); }}java源文件
ItemServiceImpl
package cn.tedu.sp02.item.service;import java.util.ArrayList;import java.util.List;import org.springframework.stereotype.Service;import cn.tedu.sp01.pojo.Item;import cn.tedu.sp01.service.ItemService;import lombok.extern.slf4j.Slf4j;@Slf4j@Servicepublic class ItemServiceImpl implements ItemService { @Override public List<Item> getItems(String orderId) { ArrayList<Item> list = new ArrayList<Item>(); list.add(new Item(1, "商品 1",1)); list.add(new Item(2, "商品 2",2)); list.add(new Item(3, "商品 3",3)); list.add(new Item(4, "商品 4",4)); list.add(new Item(5, "商品 5",5)); return list; } @Override public void decreaseNumbers(List<Item> list) { for(Item item : list) { log.info("缩小库存 - "+item); } }}ItemController
package cn.tedu.sp02.item.controller;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RestController;import cn.tedu.sp01.pojo.Item;import cn.tedu.sp01.service.ItemService;import cn.tedu.web.util.JsonResult;import lombok.extern.slf4j.Slf4j;@Slf4j@RestControllerpublic class ItemController { @Autowired private ItemService itemService; @Value("${server.port}") private int port; @GetMapping("/{orderId}") public JsonResult<List<Item>> getItems(@PathVariable String orderId) { log.info("server.port="+port+", orderId="+orderId); List<Item> items = itemService.getItems(orderId); return JsonResult.ok(items).msg("port="+port); } @PostMapping("/decreaseNumber") public JsonResult decreaseNumber(@RequestBody List<Item> items) { itemService.decreaseNumbers(items); return JsonResult.ok(); }}