spring动态生成bean

最新推荐文章于 2025-06-17 07:40:55 发布

nihao_8

最新推荐文章于 2025-06-17 07:40:55 发布

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本文链接：https://blog.youkuaiyun.com/nihao_8/article/details/38850641

本文详细介绍了如何使用Spring Batch框架，在配置文件中读取properties动态生成lineTokenizerbean，并将其应用于launch-context.xml中指定的作业。通过加载配置文件和注册bean定义，实现了灵活的数据处理流程配置。

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读取properties 然后动态生成lineTokenizer bean.
       GenericApplicationContext context = new GenericApplicationContext();

       PropertySourcesPlaceholderConfigurer pph = new PropertySourcesPlaceholderConfigurer();
        pph.setLocation(new ClassPathResource("/batch.properties"));
        context.addBeanFactoryPostProcessor(pph);


       XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(context);
       reader.loadBeanDefinitions("launch-context.xml");


       List<String> names = new ArrayList<String>();
       names.add("id");
       names.add("name");
       names.add("age");
       names.add("score");
       names.add("x");
       names.add("y");
       GenericBeanDefinition def = new GenericBeanDefinition();
       MutablePropertyValues vals = new MutablePropertyValues();
       def.setBeanClassName("org.springframework.batch.item.file.transform.DelimitedLineTokenizer");
       vals.add("delimiter", new TypedStringValue("^"));
       vals.add("names", names);
       def. setPropertyValues(vals);
       context. registerBeanDefinition("lineTokenizer", def);
       context.refresh();



       JobLauncher launcher = (JobLauncher) context.getBean("jobLauncher");
       ImsParisStateUtil dataMartState = (ImsParisStateUtil) context
               .getBean("imsParisState");

Job job = (Job) context.getBean("imsParisJob");