springboot 读取静态json文件

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本文将介绍如何在SpringBoot应用中读取和操作静态JSON文件，包括配置静态资源路径、使用Jackson库解析JSON及示例代码演示。

package com.yonyougov.fbpm.modeler.controller;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.Resource;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.lang.model.element.Name;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.Objects;


/**
 * @author liwenbo
 * @Date 2019/12/11 19:15
 * @Description
 */
@RestController
@RequestMapping("/api/proc/config/")
public class ConfigController {

    @Value("classpath:static/config/admin-config.json")
    private Resource adminConfig;
    @Value("classpath:static/config/components.json")
    private Resource components;

    @GetMapping("readFile/{fileName}")
    public String test(@PathVariable String fileName) {
        Resource resource = null;
        if (Objects.equals(fileName, "components")) {
            resource = components;
        }
        if (Objects.equals(fileName, "admin-config")) {
            resource = adminConfig;
        }
        if (StringUtils.isEmpty(fileName) || Objects.isNull(resource)) {
            return "文件不存在";
        }
        try {
            String areaData = IOUtils.toString(resource.getInputStream(), Charset.forName("UTF-8"));
            return areaData;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "文件不存在";
    }

}