jeesite中，@ConditionalOnProperty控制某个方法的显示&隐藏

@ConditionalOnProperty(name = "web.core.enabled", havingValue = "true", matchIfMissing = true)

在jeesite微服务中，某些Controller上，添加了这个@ConditionalOnProperty(name = “web.core.enabled”, havingValue = “true”, matchIfMissing = true)，然后配置文件中

# Web 相关
web:
  
  # 核心模块的Web功能（仅作为微服务时设为false）
  core: 
    enabled: true

/**
 * Copyright (c) 2013-Now http://jeesite.com All rights reserved.
 */
package com.jeesite.modules.sys.web;

import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.jeesite.common.collect.ListUtils;
import com.jeesite.common.collect.MapUtils;
import com.jeesite.common.config.Global;
import com.jeesite.common.idgen.IdGen;
import com.jeesite.common.lang.StringUtils;
import com.jeesite.common.web.BaseController;
import com.jeesite.modules.sys.entity.Company;
import com.jeesite.modules.sys.entity.Office;
import com.jeesite.modules.sys.service.CompanyService;
import com.jeesite.modules.sys.service.OfficeService;
import com.jeesite.modules.sys.utils.EmpUtils;
import com.jeesite.modules.sys.utils.UserUtils;

/**
 * 公司管理Controller
 * 
 * @author ThinkGem
 * @version 2014-8-19
 */
@Controller
@RequestMapping(value = "${adminPath}/sys/company")
@ConditionalOnProperty(name = "web.core.enabled", havingValue = "true", matchIfMissing = true)
public class CompanyController extends BaseController {

	@Autowired
	private CompanyService companyService;

	@Autowired
	private OfficeService officeService;

	/**
	 * 获取公司
	 */
	@ModelAttribute
	public Company get(String companyCode, boolean isNewRecord) {
		return companyService.get(companyCode, isNewRecord);
	}

	/**
	 * 公司列表
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:view")
	@RequestMapping(value = "list")
	public String list(Company company, HttpServletRequest request, HttpServletResponse response, Model model) {
		return "modules/sys/companyList";
	}

	/**
	 * 查询公司数据
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("user")
	@RequestMapping(value = "listData")
	@ResponseBody
	public List<Company> listData(Company company, String ctrlPermi) {
		if (StringUtils.isBlank(company.getParentCode())) {
			company.setParentCode(Company.ROOT_CODE);
		}
		if (StringUtils.isNotBlank(company.getViewCode()) || StringUtils.isNotBlank(company.getCompanyName()) || StringUtils.isNotBlank(company.getFullName())) {
			company.setParentCode(null);
		}
		// companyService.addDataScopeFilter(company, ctrlPermi);
		company.setCompanyCode(EmpUtils.getCompany().getCompanyCode());
		List<Company> list = companyService.findList(company);
		return list;
	}

	/**
	 * 查看编辑公司
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:view")
	@RequestMapping(value = "form")
	public String form(Company company, Model model, HttpServletRequest request) {
		// 创建并初始化下一个节点信息
		company = createNextNode(company);
		// 查询公司所关联的机构信息
		if (StringUtils.isNotBlank(company.getCompanyCode())) {
			Office office = new Office();
			office.setCompanyCode(company.getCompanyCode());
			List<Office> officeList = officeService.findList(office);
			model.addAttribute("officeList", officeList);
		}
		model.addAttribute("company", company);
		return "modules/sys/companyForm";
	}

	/**
	 * 创建并初始化下一个节点信息，如：排序号、默认值
	 */
	// @RequiresPermissionss("sys:company:edit")
	@RequestMapping(value = "createNextNode")
	@ResponseBody
	public Company createNextNode(Company company) {
		if (StringUtils.isNotBlank(company.getParentCode())) {
			company.setParent(companyService.get(company.getParentCode()));
		}
		if (company.getIsNewRecord()) {
			Company where = new Company();
			where.setParentCode(company.getParentCode());
			Company last = companyService.getLastByParentCode(where);
			// 获取到下级最后一个节点
			if (last != null) {
				company.setTreeSort(last.getTreeSort() + 30);
				company.setViewCode(IdGen.nextCode(last.getViewCode()));
			} else if (company.getParent() != null) {
				company.setViewCode(company.getParent().getViewCode() + "001");
			}
		}
		// 以下设置表单默认数据
		if (company.getTreeSort() == null) {
			company.setTreeSort(Company.DEFAULT_TREE_SORT);
		}
		return company;
	}

	/**
	 * 保存公司
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:edit")
	@PostMapping(value = "save")
	@ResponseBody
	public String save(@Validated Company company) {
		company.setAreaCode(company.getArea().getAreaName());
		if (StringUtils.isBlank(company.getCompanyCode())) {
			company.setIsNewRecord(true);
			company.setCompanyCode(UUID.randomUUID().toString());
			company.setViewCode(company.getCompanyCode());
			// 添加组织机构
			Office office = new Office();
			office.setIsNewRecord(true);
			office.setOfficeType("1");
			office.setOfficeCode(UUID.randomUUID().toString());
			office.setViewCode(office.getOfficeCode());
			office.setOfficeName(company.getCompanyName());
			office.setFullName(company.getFullName());
			officeService.save(office);
		}
		companyService.save(company);
		return renderResult(Global.TRUE, text("保存公司''{0}''成功", company.getCompanyName()));
	}

	/**
	 * 停用公司
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:edit")
	@RequestMapping(value = "disable")
	@ResponseBody
	public String disable(Company company) {
		Company where = new Company();
		where.setStatus(Company.STATUS_NORMAL);
		where.setParentCodes("," + company.getId() + ",");
		long count = companyService.findCount(where);
		if (count > 0) {
			return renderResult(Global.FALSE, text("该公司包含未停用的子公司！"));
		}
		company.setStatus(Company.STATUS_DISABLE);
		companyService.updateStatus(company);
		return renderResult(Global.TRUE, text("停用公司''{0}''成功", company.getCompanyName()));
	}

	/**
	 * 启用公司
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:edit")
	@RequestMapping(value = "enable")
	@ResponseBody
	public String enable(Company company) {
		company.setStatus(Company.STATUS_NORMAL);
		companyService.updateStatus(company);
		return renderResult(Global.TRUE, text("启用公司''{0}''成功", company.getCompanyName()));
	}

	/**
	 * 删除公司
	 * 
	 * @param company
	 */
	// @RequiresPermissionss("sys:company:edit")
	@RequestMapping(value = "delete")
	@ResponseBody
	public String delete(Company company) {
		companyService.delete(company);
		return renderResult(Global.TRUE, text("删除公司''{0}''成功", company.getCompanyName()));
	}

	/**
	 * 获取公司树结构数据
	 * 
	 * @param excludeCode
	 *            排除的ID
	 * @param isAll
	 *            是否显示所有机构（true：不进行权限过滤）
	 * @param isShowCode
	 *            是否显示编码（true or 1：显示在左侧；2：显示在右侧；false or null：不显示）
	 * @param isShowFullName
	 *            是否显示全公司名称
	 * @return
	 */
	// @RequiresPermissionss("user")
	@RequestMapping(value = "treeData")
	@ResponseBody
	public List<Map<String, Object>> treeData(String excludeCode, Boolean isAll, String isShowCode, String isShowFullName, String ctrlPermi) {
		List<Map<String, Object>> mapList = ListUtils.newArrayList();
		Company where = new Company();
		where.setStatus(Company.STATUS_NORMAL);
		if (!(isAll != null && isAll)) {
			companyService.addDataScopeFilter(where, ctrlPermi);
		}
		where.setAuthentication("1");
		List<Company> list = companyService.findList(where);
		for (int i = 0; i < list.size(); i++) {
			Company e = list.get(i);
			// 过滤非正常的数据
			if (!Company.STATUS_NORMAL.equals(e.getStatus())) {
				continue;
			}
			// 过滤被排除的编码（包括所有子级）
			if (StringUtils.isNotBlank(excludeCode)) {
				if (e.getId().equals(excludeCode)) {
					continue;
				}
				if (e.getParentCodes().contains("," + excludeCode + ",")) {
					continue;
				}
			}
			Map<String, Object> map = MapUtils.newHashMap();
			map.put("id", e.getId());
			map.put("pId", e.getParentCode());
			String name = e.getCompanyName();
			if ("true".equals(isShowFullName) || "1".equals(isShowFullName)) {
				name = e.getFullName();
			}
			map.put("name", StringUtils.getTreeNodeName(isShowCode, e.getViewCode(), name));
			map.put("title", e.getFullName());
			mapList.add(map);
		}
		return mapList;
	}

	// @RequiresPermissionss("sys:company:edit")
	@RequestMapping(value = "fixTreeData")
	@ResponseBody
	public String fixTreeData() {
		if (!UserUtils.getUser().isAdmin()) {
			return renderResult(Global.FALSE, "操作失败，只有管理员才能进行修复！");
		}
		companyService.fixTreeData();
		return renderResult(Global.TRUE, "数据修复成功");
	}

	/**
	 * 认证公司
	 * 
	 * @param company
	 */
	@RequestMapping(value = "authentication")
	@ResponseBody
	public String authentication(Company company) {
		company.setAuthentication("1");
		companyService.save(company);
		return renderResult(Global.TRUE, text("认证公司''{0}''成功", company.getCompanyName()));
	}

	/**
	 * 查询公司名称
	 * 
	 * @return
	 */
	@GetMapping(value = "queryMyCompany")
	@ResponseBody
	public String queryMyCompany() {
		String str = "";
		try {
			str = companyService.get(EmpUtils.getCompany().getCompanyCode()).getCompanyName();
		} catch (Exception e) {
		}
		return str;
	}

	/**
	 * 停用
	 */
	@RequestMapping(value = "disableSelected")
	@ResponseBody
	public String disableSelected(String ids) {
		if (StringUtils.isNoneBlank(ids)) {
			for (String id : ids.split(",")) {
				Company company = new Company();
				company.setId(id);
				company.setStatus(Company.STATUS_DISABLE);
				companyService.updateStatus(company);
			}
		}
		return renderResult(Global.TRUE, text("停用成功"));
	}

	/**
	 * 启用
	 */
	@RequestMapping(value = "enableSelected")
	@ResponseBody
	public String enableSelected(String ids) {
		if (StringUtils.isNoneBlank(ids)) {
			for (String id : ids.split(",")) {
				Company company = new Company();
				company.setId(id);
				company.setStatus(Company.STATUS_NORMAL);
				companyService.updateStatus(company);
			}
		}
		return renderResult(Global.TRUE, text("启用成功"));
	}

}

通过改变enabled的值来控制可以访问某些方法，我的配置文件中，值是true的时候，才可以访问controller里面的方法，否则报找不到页面（jeesite上面说，微服务项目值要是false，不知道什么原因，反正我的是false的时候，不能访问他内置的一些页面）

原文链接：https://blog.csdn.net/muyeju/article/details/103419092

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