diff --git a/project/DataCleaner.java b/project/DataCleaner.java
deleted file mode 100644
index 01bd411..0000000
--- a/project/DataCleaner.java
+++ /dev/null
@@ -1,124 +0,0 @@
-package java01;
-
-import java.util.List;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-public class DataCleaner {
-    
-    public List<Job> cleanJobs(List<Job> jobs) {
-        for (Job job : jobs) {
-            cleanJob(job);
-        }
-        return jobs;
-    }
-    
-    private void cleanJob(Job job) {
-        // 清理职位标题
-        if (job.getTitle() != null) {
-            job.setTitle(job.getTitle().trim());
-        }
-        
-        // 清理公司名称
-        if (job.getCompany() != null) {
-            job.setCompany(job.getCompany().trim());
-        }
-        
-        // 清理薪资
-        if (job.getSalary() != null) {
-            job.setSalary(job.getSalary().trim());
-        }
-        
-        // 清理地点
-        if (job.getLocation() != null) {
-            job.setLocation(job.getLocation().trim());
-        }
-        
-        // 清理经验
-        if (job.getExperience() != null) {
-            job.setExperience(job.getExperience().trim());
-        }
-        
-        // 清理学历
-        if (job.getEducation() != null) {
-            job.setEducation(job.getEducation().trim());
-        }
-        
-        // 清理技能
-        if (job.getSkills() != null) {
-            job.setSkills(job.getSkills().trim());
-        }
-    }
-    
-    // 提取薪资范围的最小值
-    public int extractMinSalary(String salary) {
-        if (salary == null || salary.isEmpty()) {
-            return 0;
-        }
-        
-        // 匹配薪资范围，如"10K-20K"
-        Pattern pattern = Pattern.compile("(\\d+)K-(\\d+)K");
-        Matcher matcher = pattern.matcher(salary);
-        
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(1)) * 1000;
-        }
-        
-        // 匹配固定薪资，如"15K"
-        pattern = Pattern.compile("(\\d+)K");
-        matcher = pattern.matcher(salary);
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(1)) * 1000;
-        }
-        
-        return 0;
-    }
-    
-    // 提取薪资范围的最大值
-    public int extractMaxSalary(String salary) {
-        if (salary == null || salary.isEmpty()) {
-            return 0;
-        }
-        
-        // 匹配薪资范围，如"10K-20K"
-        Pattern pattern = Pattern.compile("(\\d+)K-(\\d+)K");
-        Matcher matcher = pattern.matcher(salary);
-        
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(2)) * 1000;
-        }
-        
-        // 匹配固定薪资，如"15K"
-        pattern = Pattern.compile("(\\d+)K");
-        matcher = pattern.matcher(salary);
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(1)) * 1000;
-        }
-        
-        return 0;
-    }
-    
-    // 提取经验年限
-    public int extractExperienceYears(String experience) {
-        if (experience == null || experience.isEmpty()) {
-            return 0;
-        }
-        
-        // 匹配经验年限，如"3-5年"
-        Pattern pattern = Pattern.compile("(\\d+)-(\\d+)年");
-        Matcher matcher = pattern.matcher(experience);
-        
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(1));
-        }
-        
-        // 匹配固定经验，如"3年以上"
-        pattern = Pattern.compile("(\\d+)年");
-        matcher = pattern.matcher(experience);
-        if (matcher.find()) {
-            return Integer.parseInt(matcher.group(1));
-        }
-        
-        return 0;
-    }
-}
\ No newline at end of file