Ognl基本使用

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Ognl默认是从“根”中取数据的

下面Demo中用的是

Ognl.getValue(String expression, Map context, Object root)

这个方法。

// 参数1，填写Ognl表达式
// 参数2，Map类=》context上下文
// 参数3，JavaBean,Map,List````等类型，Root 根

Ognl需要的jar包：

先准备两个JavaBean

public class User {
    private String name;
    private int age;
    private Address address; 

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

User

public class Address {
    private String city;

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }
}

Address