请用代码完善vue+springboot前后端分离分页

好的，下面将为你提供一个简单的示例代码，来完善vue+springboot前后端分离分页功能。

前端代码（Vue+ElementUI）：

<template>
  <div>
    <el-table :data="tableData" border>
      <el-table-column prop="id" label="ID"></el-table-column>
      <el-table-column prop="name" label="Name"></el-table-column>
      <el-table-column prop="age" label="Age"></el-table-column>
    </el-table>
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="currentPage"
      :page-sizes="[10, 20, 30, 40]"
      :page-size="pageSize"
      :total="total">
    </el-pagination>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      tableData: [],
      currentPage: 1,
      pageSize: 10,
      total: 0
    };
  },
  mounted() {
    this.getTableData();
  },
  methods: {
    getTableData() {
      axios.get('/api/user', {
        params: {
          page: this.currentPage,
          size: this.pageSize
        }
      }).then(response => {
        this.tableData = response.data.content;
        this.total = response.data.totalElements;
      });
    },
    handleSizeChange(val) {
      this.pageSize = val;
      this.getTableData();
    },
    handleCurrentChange(val) {
      this.currentPage = val;
      this.getTableData();
    }
  }
};
</script>

后端代码（Spring Boot + MyBatis）：

@RestController
@RequestMapping("/api/user")
public class UserController {
  
  @Autowired
  private UserService userService;
  
  @GetMapping
  public Page<User> getUserList(@RequestParam(defaultValue = "1") int page, 
                                @RequestParam(defaultValue = "10") int size) {
    Pageable pageable = PageRequest.of(page - 1, size);
    return userService.getUserList(pageable);
  }
}

@Service
public class UserServiceImpl implements UserService {
  
  @Autowired
  private UserMapper userMapper;

  @Override
  public Page<User> getUserList(Pageable pageable) {
    return userMapper.getUserList(pageable);
  }
}

@Mapper
public interface UserMapper {
  
  Page<User> getUserList(Pageable pageable);
}

以上代码仅供参考，具体实现方式可能因具体业务需求而异。