第 05章开发前的准备（5.7）

创建全局公共类
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>

    <parent>
        <groupId>com.funtl</groupId>
        <artifactId>cbj-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../cbj-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>cbj-common</artifactId>
    <packaging>jar</packaging>


    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>

        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>nexus</id>
            <name>Nexus Repository</name>
            <url>http://192.168.0.15:8081/repository/maven-public/</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
            </releases>
        </repository>

    </repositories>

</project>

.gitlab-ci.yml

#步骤
stages:
  - build
  - push

#构建
build:
  stage: build
  script:
    - /usr/local/maven/apache-maven-3.5.3/bin/mvn clean package
    - cd docker
    - docker build -t 192.168.0.39:5000/cbj-common .


#推送
push:
  stage: push
  script:
    - docker push  192.168.0.39:5000/cbj-common

创建docker目录
新建Dockerfile

FROM openjdk:8-jre

MAINTAINER yuyingliang <1079226090@qq.com>

RUN mkdir /app

创建src/main/java
创建com.funt.cbj.common.constants包

package com.funt.cbj.common.constants;
创建HttpStatusConstants类

public enum HttpStatusConstants {
    BAD_GATEWAY(502, "从上游服务器收到无效的响应");

    private int status;
    private String content;

    private HttpStatusConstants(int status, String content) {
        this.status = status;
        this.content = content;
    }

    public int getStatus() {
        return status;
    }

    public String getContent() {
        return content;
    }
}

创建com.funt.cbj.common.dto包
创建BaseResult类

package com.funt.cbj.common.dto;


import lombok.Data;

import java.io.Serializable;
import java.util.List;

@Data
public class BaseResult implements Serializable {
public  static final String RESULT_OK="ok";
public  static final String RESULT_NOT_OK="not_ok";
public  static final String SUCCES_OK="成功操作";

  private String result;
  private Object data;
  private String succes;
  private Cursor cursor;
  private List<Error> errors;

    public static BaseResult ok() {
        return createResult(RESULT_OK,null,SUCCES_OK,null,null);
    }

    public static BaseResult ok(Object data) {
    return createResult(RESULT_OK, data,SUCCES_OK,null,null);
    }

   public static BaseResult notoOk(List<BaseResult.Error>errors){
        return createResult(RESULT_NOT_OK,null,"",null,errors);
    }


    public static BaseResult createResult (String result, Object data, String succes, Cursor cursor, List<Error> errors){
    BaseResult  baseResult= new BaseResult();
    baseResult.setResult(result);
    baseResult.setData(data);
    baseResult.setSucces(succes);
    baseResult.setCursor(cursor);
    baseResult.setErrors(errors);
    return baseResult;
}


    @Data
public static class Cursor{
    private int total;
    private int offset;
    private int limit;
}

@Data

public static class Error{
    private String field;
    private String messages;

    public Error(String field, String messages) {
        this.field = field;
        this.messages = messages;
    }
}


}

创建com.funt.cbj.common.utils包
创建MapperUtils类

package com.funt.cbj.common.utils;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Jackson 工具类
 *
 */
public class MapperUtils {
    private final static ObjectMapper objectMapper = new ObjectMapper();

    public static ObjectMapper getInstance() {
        return objectMapper;
    }

    /**
     * 转换为 JSON 字符串
     *
     * @param obj
     * @return
     * @throws Exception
     */
    public static String obj2json(Object obj) throws Exception {
        return objectMapper.writeValueAsString(obj);
    }

    /**
     * 转换为 JSON 字符串，忽略空值
     *
     * @param obj
     * @return
     * @throws Exception
     */
    public static String obj2jsonIgnoreNull(Object obj) throws Exception {
        ObjectMapper mapper = new ObjectMapper();
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        return mapper.writeValueAsString(obj);
    }

    /**
     * 转换为 JavaBean
     *
     * @param jsonString
     * @param clazz
     * @return
     * @throws Exception
     */
    public static <T> T json2pojo(String jsonString, Class<T> clazz) throws Exception {
        objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
        return objectMapper.readValue(jsonString, clazz);
    }

    /**
     * 字符串转换为 Map<String, Object>
     *
     * @param jsonString
     * @return
     * @throws Exception
     */
    public static <T> Map<String, Object> json2map(String jsonString) throws Exception {
        ObjectMapper mapper = new ObjectMapper();
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        return mapper.readValue(jsonString, Map.class);
    }

    /**
     * 字符串转换为 Map<String, T>
     */
    public static <T> Map<String, T> json2map(String jsonString, Class<T> clazz) throws Exception {
        Map<String, Map<String, Object>> map = objectMapper.readValue(jsonString, new TypeReference<Map<String, T>>() {
        });
        Map<String, T> result = new HashMap<String, T>();
        for (Map.Entry<String, Map<String, Object>> entry : map.entrySet()) {
            result.put(entry.getKey(), map2pojo(entry.getValue(), clazz));
        }
        return result;
    }

    /**
     * 深度转换 JSON 成 Map
     *
     * @param json
     * @return
     */
    public static Map<String, Object> json2mapDeeply(String json) throws Exception {
        return json2MapRecursion(json, objectMapper);
    }

    /**
     * 把 JSON 解析成 List，如果 List 内部的元素存在 jsonString，继续解析
     *
     * @param json
     * @param mapper 解析工具
     * @return
     * @throws Exception
     */
    private static List<Object> json2ListRecursion(String json, ObjectMapper mapper) throws Exception {
        if (json == null) {
            return null;
        }

        List<Object> list = mapper.readValue(json, List.class);

        for (Object obj : list) {
            if (obj != null && obj instanceof String) {
                String str = (String) obj;
                if (str.startsWith("[")) {
                    obj = json2ListRecursion(str, mapper);
                } else if (obj.toString().startsWith("{")) {
                    obj = json2MapRecursion(str, mapper);
                }
            }
        }

        return list;
    }

    /**
     * 把 JSON 解析成 Map，如果 Map 内部的 Value 存在 jsonString，继续解析
     *
     * @param json
     * @param mapper
     * @return
     * @throws Exception
     */
    private static Map<String, Object> json2MapRecursion(String json, ObjectMapper mapper) throws Exception {
        if (json == null) {
            return null;
        }

        Map<String, Object> map = mapper.readValue(json, Map.class);

        for (Map.Entry<String, Object> entry : map.entrySet()) {
            Object obj = entry.getValue();
            if (obj != null && obj instanceof String) {
                String str = ((String) obj);

                if (str.startsWith("[")) {
                    List<?> list = json2ListRecursion(str, mapper);
                    map.put(entry.getKey(), list);
                } else if (str.startsWith("{")) {
                    Map<String, Object> mapRecursion = json2MapRecursion(str, mapper);
                    map.put(entry.getKey(), mapRecursion);
                }
            }
        }

        return map;
    }

    /**
     * 将 JSON 数组转换为集合
     *
     * @param jsonArrayStr
     * @param clazz
     * @return
     * @throws Exception
     */
    public static <T> List<T> json2list(String jsonArrayStr, Class<T> clazz) throws Exception {
        JavaType javaType = getCollectionType(ArrayList.class, clazz);
        List<T> list = (List<T>) objectMapper.readValue(jsonArrayStr, javaType);
        return list;
    }


    /**
     * 获取泛型的 Collection Type
     *
     * @param collectionClass 泛型的Collection
     * @param elementClasses  元素类
     * @return JavaType Java类型
     * @since 1.0
     */
    public static JavaType getCollectionType(Class<?> collectionClass, Class<?>... elementClasses) {
        return objectMapper.getTypeFactory().constructParametricType(collectionClass, elementClasses);
    }

    /**
     * 将 Map 转换为 JavaBean
     *
     * @param map
     * @param clazz
     * @return
     */
    public static <T> T map2pojo(Map map, Class<T> clazz) {
        return objectMapper.convertValue(map, clazz);
    }

    /**
     * 将 Map 转换为 JSON
     *
     * @param map
     * @return
     */
    public static String mapToJson(Map map) {
        try {
            return objectMapper.writeValueAsString(map);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 将 JSON 对象转换为 JavaBean
     *
     * @param obj
     * @param clazz
     * @return
     */
    public static <T> T obj2pojo(Object obj, Class<T> clazz) {
        return objectMapper.convertValue(obj, clazz);
    }
}

第 05章 开发前的准备（5.7）

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第 05章开发前的准备（5.7）