refactor(client): 重构银行和公司相关代码

- 更新了多个类中的导入语句，替换了模型类为对应的VO类
- 优化了部分方法的参数和返回类型，使用VO类替代模型类
- 重构了自动补全功能，使用统一的泛型方法
- 添加了缓存注解，提高了数据访问性能
- 优化了部分代码结构，提高了可维护性

client/src/main/java/com/ecep/contract/service/BankService.java

@@ -1,16 +1,63 @@
 package com.ecep.contract.service;
 
-import java.util.List;
-
+import org.springframework.cache.annotation.CacheConfig;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.cache.annotation.Caching;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
-import com.ecep.contract.model.Bank;
+import com.ecep.contract.util.ParamUtils;
 import com.ecep.contract.vm.BankViewModel;
+import com.ecep.contract.vo.BankVo;
+
+import javafx.util.StringConverter;
 
 @Service
-public class BankService extends QueryService<Bank, BankViewModel> {
-    public Bank findByName(String name) {
-        return null;
+@CacheConfig(cacheNames = "bank")
+public class BankService extends QueryService<BankVo, BankViewModel> {
+    @Cacheable(key = "#p0")
+    @Override
+    public BankVo findById(Integer id) {
+        return super.findById(id);
+    }
+
+    public BankVo findByName(String name) {
+        Page<BankVo> page = findAll(ParamUtils.equal(name, name), Pageable.ofSize(1));
+        if (page.isEmpty()) {
+            return null;
+        }
+        return page.getContent().getFirst();
+    }
+
+    @Caching(evict = { @CacheEvict(key = "#p0.id") })
+    @Override
+    public BankVo save(BankVo entity) {
+        return super.save(entity);
+    }
+
+    @Caching(evict = { @CacheEvict(key = "#p0.id") })
+    @Override
+    public void delete(BankVo entity) {
+        super.delete(entity);
+    }
+
+    private StringConverter<BankVo> stringConverter = new StringConverter<BankVo>() {
+        @Override
+        public String toString(BankVo object) {
+            return object == null ? "" : object.getName();
+        }
+
+        @Override
+        public BankVo fromString(String string) {
+            return findByName(string);
+        }
+    };
+
+    @Override
+    public StringConverter<BankVo> getStringConverter() {
+        return stringConverter;
     }
 
 }