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src/main/java/com/xkrs/dao/GlobalConfigurationDao.java

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+package com.xkrs.dao;
+
+import com.xkrs.model.entity.GlobalConfigurationEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.stereotype.Component;
+
+import java.util.Optional;
+
+@Component
+public interface GlobalConfigurationDao extends JpaRepository<GlobalConfigurationEntity, Long>, JpaSpecificationExecutor<GlobalConfigurationEntity> {
+
+    Optional<GlobalConfigurationEntity> findByKey(String key);
+
+}

src/main/java/com/xkrs/model/entity/GlobalConfigurationEntity.java

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+package com.xkrs.model.entity;
+
+import javax.persistence.*;
+import java.io.Serializable;
+
+/**
+ * 全局配置表
+ */
+@Entity
+@Table(name = "global_configuration")
+public class GlobalConfigurationEntity implements Serializable {
+
+    /**
+     * 主键id
+     */
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "global_configuration_seq_gen")
+    @SequenceGenerator(name = "global_configuration_seq_gen", sequenceName = "global_configuration_id_seq", allocationSize = 1)
+    private Long id;
+
+    /**
+     * 全局配置项的键
+     */
+    private String key;
+
+    /**
+     * 全局配置项的值
+     */
+    private String value;
+
+    /**
+     * 备注信息
+     */
+    private String remark;
+
+    public GlobalConfigurationEntity() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+    public String getRemark() {
+        return remark;
+    }
+
+    public void setRemark(String remark) {
+        this.remark = remark;
+    }
+
+    @Override
+    public String toString() {
+        return "GlobalConfigurationEntity{" +
+                "id=" + id +
+                ", key='" + key + '\'' +
+                ", value='" + value + '\'' +
+                ", remark='" + remark + '\'' +
+                '}';
+    }
+}

src/main/java/com/xkrs/service/GlobalConfigurationService.java

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+package com.xkrs.service;
+
+import com.xkrs.model.entity.GlobalConfigurationEntity;
+
+public interface GlobalConfigurationService {
+
+    /**
+     * 新增全局配置
+     */
+    String insertGlobalConfiguration(GlobalConfigurationEntity globalConfiguration);
+
+    /**
+     * 删除全局配置
+     */
+    String deleteGlobalConfiguration(GlobalConfigurationEntity globalConfiguration);
+
+    /**
+     * 修改全局配置
+     */
+    String updateGlobalConfiguration(GlobalConfigurationEntity globalConfiguration);
+
+    /**
+     * 查询全局配置
+     */
+    String queryGlobalConfiguration(GlobalConfigurationEntity globalConfiguration);
+
+}

src/main/java/com/xkrs/service/impl/GlobalConfigurationServiceImpl.java

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+package com.xkrs.service.impl;
+
+import com.xkrs.common.encapsulation.PromptMessageEnum;
+import com.xkrs.dao.GlobalConfigurationDao;
+import com.xkrs.model.entity.GlobalConfigurationEntity;
+import com.xkrs.service.GlobalConfigurationService;
+import com.xkrs.utils.LocalNullUtils;
+import org.apache.hc.core5.util.TextUtils;
+import org.springframework.context.i18n.LocaleContextHolder;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.Locale;
+import java.util.Optional;
+
+import static com.xkrs.common.encapsulation.OutputEncapsulation.outputEncapsulationObject;
+
+@Service
+public class GlobalConfigurationServiceImpl implements GlobalConfigurationService {
+
+    private final Locale locale = LocaleContextHolder.getLocale();
+
+    @Resource
+    private GlobalConfigurationDao globalConfigurationDao;
+
+    @Override
+    public String insertGlobalConfiguration(GlobalConfigurationEntity globalConfiguration) {
+        final String key = LocalNullUtils.formatNullValue(globalConfiguration.getKey());
+        final String value = LocalNullUtils.formatNullValue(globalConfiguration.getValue());
+        final String remark = LocalNullUtils.formatNullValue(globalConfiguration.getRemark());
+        if (TextUtils.isEmpty(key)) {
+            return outputEncapsulationObject(PromptMessageEnum.DATA_WRONG, "key不可为空", locale);
+        }
+        Optional<GlobalConfigurationEntity> duplicatedOptional = globalConfigurationDao.findByKey(key);
+        if (duplicatedOptional.isPresent()) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "key已存在", locale);
+        }
+        GlobalConfigurationEntity globalConfigurationEntity = new GlobalConfigurationEntity();
+        globalConfigurationEntity.setKey(key);
+        globalConfigurationEntity.setValue(value);
+        globalConfigurationEntity.setRemark(remark);
+        globalConfigurationDao.save(globalConfigurationEntity);
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "新增成功", locale);
+    }
+
+    @Override
+    public String deleteGlobalConfiguration(GlobalConfigurationEntity globalConfiguration) {
+        Long id = globalConfiguration.getId();
+        if (null == id) {
+            return outputEncapsulationObject(PromptMessageEnum.DATA_WRONG, "id不可为空", locale);
+        }
+        Optional<GlobalConfigurationEntity> targetOptional = globalConfigurationDao.findById(id);
+        if (targetOptional.isEmpty()) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "id不存在", locale);
+        }
+        globalConfigurationDao.deleteById(id);
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "删除成功", locale);
+    }
+
+    @Override
+    public String updateGlobalConfiguration(GlobalConfigurationEntity globalConfiguration) {
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "新增成功", locale);
+    }
+
+    @Override
+    public String queryGlobalConfiguration(GlobalConfigurationEntity globalConfiguration) {
+        return null;
+    }
+}

src/main/java/com/xkrs/utils/LocalNullUtils.java

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+package com.xkrs.utils;
+
+public class LocalNullUtils {
+
+    private LocalNullUtils() {
+    }
+
+    public static String formatNullValue(String value) {
+        return formatNullValue(value, "");
+    }
+
+    public static String formatNullValue(String value, String defaultValue) {
+        return null == value ? defaultValue : value;
+    }
+
+}