1 基本取值

@Test

    //1基础语法演示-基本取值

    //取出root中的属性值

    public void fun2() throws Exception{

        //1 准备OGNLcontext

        OgnlContext oc = new OgnlContext();

        //2 准备root

        User rootUser = new User();

        rootUser.setUsername("tom");

        rootUser.setAge(18);

        //3准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User());

        context.put("user2", new User());

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个Map作为context部分

        oc.setValues(context);

        //===============================

        //4书写ognl

        //获取root用user对象的属性值username & age

        String username = (String) Ognl.getValue("username", oc,oc.getRoot());

        Integer age = (Integer) Ognl.getValue("age", oc, oc.getRoot());

        System.out.println(username);

        System.out.println(age);

    }
@Test

    //1 ognl语法演示-基本取值

    //取出context中属性的值

    public void fun3() throws Exception{

        //1准备ognlcontext

        OgnlContext ognlContext = new OgnlContext();

        //2准备root

        User rootUser = new User("lucy", 24);

        //3准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("旺财",26));

        context.put("user2", new User("小强",21));

        //将rootUser作为root部分

        ognlContext.setRoot(rootUser);

        //将context这个Map作为context部分

        ognlContext.setValues(context);

        //==========================================

        //4书写Ognl

        //取出context中键为user1&user2对象的username和age属性

        String username1 = (String) Ognl.getValue("#user1.username", ognlContext, ognlContext.getRoot());

        Integer age1 = (Integer) Ognl.getValue("#user1.age", ognlContext, ognlContext.getRoot());

        String username2 = (String) Ognl.getValue("#user2.username", ognlContext, ognlContext.getRoot());

        Integer age2 = (Integer) Ognl.getValue("#user2.age", ognlContext, ognlContext.getRoot());

        System.out.println(username1+":"+age1);

        System.out.println(username2+":"+age2);

    }

2 赋值

//2 ognl基本语法-赋值

    @Test

    public void fun4() throws Exception{

        //准备ognlcontext

        OgnlContext oc = new OgnlContext();

        //准备root

        User rootUser = new User("小强", 15);

        //准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("张三", 19));

        context.put("user2", new User("李四", 20));

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个Map作为context部分

        oc.setValues(context);

        //======================================

        //书写ognl

        //将root中的user对象的username设置为tom

        String username = (String) Ognl.getValue("username='tom',username", oc, oc.getRoot());

        System.out.println(username);

        //将context中的user1对象的age修改为25；

        Integer age = (Integer) Ognl.getValue("#user1.age=25,#user1.age", oc, oc.getRoot());

        System.out.println(age);

        String name2 = (String) Ognl.getValue("#user2.username='jerry',#user2.age=36,#user2.username", oc, oc.getRoot());

        System.out.println(name2);

        Integer age2 = (Integer) Ognl.getValue("#user2.age", oc, oc.getRoot());

        System.out.println(age2);

    }

3 调用方法

//3 ognl基本语法-调用方法

    @Test

    public void fun5() throws Exception{

        //准备ognlcontext

        OgnlContext oc = new OgnlContext();

        //准备root

        User rootUser = new User("tom", 28);

        //准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("jenny", 19));

        context.put("user2", new User("lucy", 21));

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个map作为context部分

        oc.setValues(context);

        //=================================

        //书写ognl

        //调用root中user对象的setUsername方法

        String username = (String) Ognl.getValue("setUsername('leilei'),username", oc, oc.getRoot());

        System.out.println(username);

        //调用root中User对象的getName()方法

        Integer age = (Integer) Ognl.getValue("getAge()", oc, oc.getRoot());

        System.out.println(age);

        Ognl.getValue("#user1.setUsername('旺财'),#user1.setAge(27)", oc, oc.getRoot());

        String name1 = (String) Ognl.getValue("#user1.getUsername()", oc, oc.getRoot());

        Integer age1 = (Integer) Ognl.getValue("#user1.getAge()", oc, oc.getRoot());

        System.out.println(name1+":"+age1);

    }

4 调用静态方法

//4 ognl基本语法--->调用静态方法

    @Test

    public void fun6() throws Exception{

        //准备ognlcontext

        OgnlContext oc = new OgnlContext();

        //准备root

        User rootUser = new User("tom", 18);

        //准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("lucy", 15));

        context.put("user2", new User("jerry", 15));

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个map作为context

        oc.setValues(context);

        //书写ognl

        String s = (String) Ognl.getValue("@www.test.utils.EchoUtils@echo('你好')", oc, oc.getRoot());

        System.out.println(s);

        //Double pi = (Double) Ognl.getValue("@java.lang.Math@PI", oc, oc.getRoot());

        Double pi = (Double) Ognl.getValue("@@PI", oc, oc.getRoot());

        System.out.println(pi);

    }

5 创建对象

//5 ognl基本语法--->创建对象（list,map）

    @Test

    public void fun7() throws Exception{

        //准备ognlcontext

        OgnlContext oc = new OgnlContext();

        //准备root

        User rootUser = new User("tom", 15);

        //准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("jeny", 56));

        context.put("user2", new User("lucy", 23));

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个map作为context

        oc.setValues(context);

        //书写ognl

        //创建list对象

        Integer size = (Integer)Ognl.getValue("{'tom','jerry','lucy','jack'}.size()", oc, oc.getRoot());

        String name = (String)Ognl.getValue("{'tom','jerry','lucy','jack'}[0]", oc, oc.getRoot());

        String name1 = (String)Ognl.getValue("{'tom','jerry','lucy','jack'}.get(1)", oc, oc.getRoot());

        //System.out.println(size);

        //System.out.println(name);

        //System.out.println(name1);

        //创建map对象

        Integer mapSize = (Integer)Ognl.getValue("#{'name':'tom','age':35}.size", oc, oc.getRoot());

        String mapName = (String)Ognl.getValue("#{'name':'tom','age':35}['name']", oc, oc.getRoot());

        Integer mapAge = (Integer)Ognl.getValue("#{'name':'tom','age':35}.get('age')", oc, oc.getRoot());

        System.out.println(mapSize);

        System.out.println(mapName);

        System.out.println(mapAge);

    }

6 使用字符串的已有方法

//6 ognl基本语法====>使用字符串的已有方法

    @Test

    public void fun8() throws Exception{

        //准备ognlcontext

        OgnlContext oc = new OgnlContext();

        //准备root

        User rootUser = new User("tom", 15);

        //准备context

        Map<String,User> context = new HashMap<String,User>();

        context.put("user1", new User("jeny", 56));

        context.put("user2", new User("lucy", 23));

        //将rootUser作为root部分

        oc.setRoot(rootUser);

        //将context这个map作为context

        oc.setValues(context);

        //书写ognl

        Integer sl = (Integer) Ognl.getValue("'we are from china'.length()", oc, oc.getRoot());

        String sr = (String) Ognl.getValue("'we are from china'.replace('we','you')", oc, oc.getRoot());

        Character sc = (Character) Ognl.getValue("'we are from china'.charAt(0)", oc, oc.getRoot());

        System.out.println(sl);

        System.out.println(sr);

        System.out.println(sc);

    }

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