扫描spring mvc 控制器和方法，生成权限树

1、权限对象：

public class RightPath {    int id;    int fartherId;    String url;    String name;    public RightPath(int id,int fartherId,String url,String name){        this.id = id;        this.fartherId = fartherId;        this.url = url;        this.name = name;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public int getFartherId() {        return fartherId;    }    public void setFartherId(int fartherId) {        this.fartherId = fartherId;    }    public String getUrl() {        return url;    }    public void setUrl(String url) {        this.url = url;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

2、自定义注解：

/** * 控制器路径名注解 * Created by ly on 2017/1/12. */@Target({ElementType.TYPE, ElementType.METHOD})@Retention(RetentionPolicy.RUNTIME)@Documentedpublic @interface PathDescription {    public String pathName() default "";}

3、控制器使用：

 @RequestMapping(value = "/getProvinceList",method = RequestMethod.POST)    @ResponseBody    @PathDescription(pathName = "省份管理")    public String GetProvinceList(HttpServletRequest request) throws IOException {        String s = HttpPost.submitPostData( "/province/list",null);        return s;    }

4、扫描：

public class PackageClassesScaner {    private static final String RESOURCE_PATTERN = "/**/*.class";    private ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();    private List<String> packagesList = new LinkedList<String>();    private List<TypeFilter> typeFilters = new LinkedList<TypeFilter>();    private Map<String, String> classSet = new LinkedHashMap<>();    /**     * 构造函数     *     * @param packagesToScan   指定哪些包需要被扫描,支持多个包"package.a,package.b"并对每个包都会递归搜索     * @param annotationFilter 指定扫描包中含有特定注解标记的bean,支持多个注解     */    public PackageClassesScaner(String[] packagesToScan, Class<? extends Annotation>... annotationFilter) {        if (packagesToScan != null) {            for (String packagePath : packagesToScan) {                this.packagesList.add(packagePath);            }        }        if (annotationFilter != null) {            for (Class<? extends Annotation> annotation : annotationFilter) {                typeFilters.add(new AnnotationTypeFilter(annotation, false));            }        }    }    /**     * 将符合条件的Bean以Class集合的形式返回     *     * @return     * @throws IOException     * @throws ClassNotFoundException     */    public List<RightPath> getClassSet() throws IOException, ClassNotFoundException {        List<RightPath> list = new ArrayList<>();        int id = 0;        if (!this.packagesList.isEmpty()) {            for (String pkg : this.packagesList) {                String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +                        ClassUtils.convertClassNameToResourcePath(pkg) + RESOURCE_PATTERN;                Resource[] resources = this.resourcePatternResolver.getResources(pattern);                MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);                for (Resource resource : resources) {                    if (resource.isReadable()) {                        MetadataReader reader = readerFactory.getMetadataReader(resource);                        String pathName = getPathName(reader);//获取注解名称，即路径的中文含义                        String urlPath = getUrl(reader);                        if (matchesEntityTypeFilter(reader, readerFactory)) {                            if (!urlPath.isEmpty()) {                                list.add(new RightPath(id, 0, urlPath, pathName));                                int fartherId = id;                                id++;                                //获取控制器中的方法                                Set<MethodMetadata> ss = reader.getAnnotationMetadata().getAnnotatedMethods(RequestMapping.class.getName());                                for (MethodMetadata mdata :                                        ss) {                                    pathName = getPathName(mdata);                                    String mthPath = getUrl(mdata);                                    list.add(new RightPath(id, fartherId, urlPath + mthPath, pathName));                                    id++;                                }                            }                        }                    }                }            }        }        return list;    }    /**     * 获取控制器注解中的 pathName     *     * @param reader     * @return     */    private String getPathName(MetadataReader reader) {        if (reader.getAnnotationMetadata().getAnnotationAttributes(com.jiapeng.util.PathDescription.class.getName()) != null) {            return reader.getAnnotationMetadata().getAnnotationAttributes(com.jiapeng.util.PathDescription.class.getName()).get("pathName").toString();        } else {            return "";        }    }    /**     * 获取方法注解中的 pathName     * @param mdata     * @return     */    private String getPathName(MethodMetadata mdata){        if (mdata.getAnnotationAttributes(com.jiapeng.util.PathDescription.class.getName()) != null) {            return mdata.getAnnotationAttributes(com.jiapeng.util.PathDescription.class.getName()).get("pathName").toString();        }else{            return "";        }    }    /**     * 获取控制器映射的地址     * @param reader     * @return     */    private String getUrl(MetadataReader reader){        AnnotationAttributes attributes = (AnnotationAttributes) reader.getAnnotationMetadata().getAnnotationAttributes(RequestMapping.class.getName());        String urlPath = "";        if (attributes != null) {            String[] values = attributes.getStringArray("value");            if (values.length > 0) {                urlPath = values[0];            }        }        return urlPath;    }    /**     * 获取方法映射的地址     * @param mdata     * @return     */    private String getUrl(MethodMetadata mdata){        AnnotationAttributes att = (AnnotationAttributes) mdata.getAnnotationAttributes(RequestMapping.class.getName());        String mthPath = "";        if (att != null) {            String[] values = att.getStringArray("value");            if (values.length > 0) {                String tmp = values[0];                if (tmp.indexOf("{") != -1) {                    tmp = tmp.substring(0, tmp.lastIndexOf("/"));                }                if (tmp.indexOf("/") > 0 || tmp.indexOf("/")==-1) {                    tmp = "/" + tmp;                }                mthPath = tmp;            }        }        return mthPath;    }    /**     * 检查当前扫描到的Bean含有任何一个指定的注解标记     *     * @param reader     * @param readerFactory     * @return     * @throws IOException     */    private boolean matchesEntityTypeFilter(MetadataReader reader, MetadataReaderFactory readerFactory) throws IOException {        if (!this.typeFilters.isEmpty()) {            for (TypeFilter filter : this.typeFilters) {                if (filter.match(reader, readerFactory)) {                    return true;                }            }        }        return false;    }}

5、结果：

   @Test    public void testScanPackage() throws IOException, ClassNotFoundException {        String[] pack={"com.xfw.controller","com.exportStu.controller"};        PackageClassesScaner packageClassesScaner = new PackageClassesScaner(pack, Controller.class);        List<RightPath> list = packageClassesScaner.getClassSet();        System.out.println(list);    }

参考：http://bewithme.iteye.com/blog/2342201