public static void main(String[] args) throws Exception { File modelFile = null; if (args.length > 0) modelFile = new File(args[0]); if(modelFile == null || !modelFile.exists()) modelFile = new File("intro.csv");加载文件 if(!modelFile.exists()) { System.err.println("Please, specify name of file, or put file ‘input.csv‘ into current directory!"); System.exit(1); } DataModel model = new FileDataModel(modelFile); UserSimilarity similarity = new PearsonCorrelationSimilarity(model); UserNeighborhood neighborhood = new NearestNUserNeighborhood(2, similarity, model); Recommender recommender = new GenericUserBasedRecommender( model, neighborhood, similarity); List<RecommendedItem> recommendations = recommender.recommend(1, 1);推荐，对于用户1 推荐一个 for (RecommendedItem recommendation : recommendations) { System.out.println(recommendation); } }原文：http://www.cnblogs.com/mrcharles/p/5051850.html