创建动态POJO并为其设置值 [英] Creating dynamic POJOs and set values to it

问题描述

final Map<String, Class<?>> properties = new HashMap<String, Class<?>>();
properties.put("jobName", String.class);
properties.put("companyName", String.class);
properties.put("totalApplicantForJob", String.class);        
final Class<?> beanClass = createBeanClass("ApplicantCountVsJobBoards", properties);

public static Class<?> createBeanClass (final String className, final Map<String, Class<?>> properties) {
    final BeanGenerator beanGenerator = new BeanGenerator();
    // NamingPolicy policy = 
    //beanGenerator.setNamingPolicy(null);
    BeanGenerator.addProperties(beanGenerator, properties);
    return (Class<?>) beanGenerator.createClass();
}

如何将值添加到这些类对象中。

How will I add values to these class object.

推荐答案

cglib的 BeanGenerator 不仅生成一个动态类，还添加了访问器方法。那么如何做一个反射方法调用像这样：

cglib's BeanGenerator not only generates a dynamic class, it also adds accessor methods. So how about doing a reflective method call like this:

Object instance = beanClass.newInstance(); // Creates a new object of your dynamic class
Method setJobName = beanClass.getMethod("setJobName", String.class); // Gets the setJobName method that takes one String argument
method.invoke(instance, "Super Cool Job");

现在（部分）填充您的bean。

Your bean is now (partially) populated.

可能有更有效的方法，这可能只是为了向您展示这个概念。

There might be more efficient ways, probably, this is just to show you the concept.

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