spring_Condition.java

static class Condition implements ConfigurationCondition {

        @Override
        public ConfigurationPhase getConfigurationPhase() {
            return ConfigurationPhase.PARSE_CONFIGURATION;
        }
        //condition获取properties，直接用context.getEnvironment().getProperty()不行，因为配置还未加载进去，所以需要用以下写法
        @Override
        public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
            Properties properties=new Properties();
            Resource resource = context.getResourceLoader().getResource("classpath:/batch.properties");
            try {
                properties.load(resource.getInputStream());
                final String enable = properties.getProperty("batch.enable");
                if(enable == null) {
                    return false;
                }

                return Boolean.valueOf(enable.trim());
            } catch (Exception e) {
                logger.error("Exception occurred while batch configuration" , e);
            }

            return false;
        }
    }