Spring Security 5：找不到BCryptPasswordEncoder类型的Bean

时间：2018-03-05 17:45:56

标签： java spring spring-boot spring-security

我正在尝试使用JWT令牌来保护REST API。为了保存编码的用户密码，我正在尝试使用bcrypt进行编码。但是，当我尝试自动装配BCryptPasswordEncoder时，我收到以下错误：

Could not autowire. No beans of BCryptPasswordEncoder type found. Check autowiring problems in bean class.

这就是我的控制器的样子：

package com.starter.springsecurity.demo.controller;

import com.starter.springsecurity.demo.domain.User;
import com.starter.springsecurity.demo.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/users")
public class UserController {

    @Autowired
    private UserRepository userRepository;

    private BCryptPasswordEncoder bCryptPasswordEncoder;

    public UserController(BCryptPasswordEncoder bCryptPasswordEncoder){
        this.bCryptPasswordEncoder = bCryptPasswordEncoder;
    }

    @RequestMapping("/register")
    public void register(@RequestBody User user){

    }
}

这是我关注的博客： https://dzone.com/articles/implementing-jwt-authentication-on-spring-boot-api 

Pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.starter.springsecurity</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>Spring Security demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

有关Bcrypt的Spring Security 5有什么变化吗？

enter image description here

4 个答案:

答案 0 :(得分：6)

您提到的文章进一步描述了它：

  

没有可以在UserController类中注入的BCryptPasswordEncoder的默认实例

稍后在代码中

@Bean
public BCryptPasswordEncoder bCryptPasswordEncoder() {
    return new BCryptPasswordEncoder();
}

您是否按照这些步骤定义了BCryptPasswordEncoder类？

答案 1 :(得分：0)

    @Bean
public BCryptPasswordEncoder bCryptPasswordEncoder() {
    return new BCryptPasswordEncoder();
}

将此注入添加到同一类中，因为spring不能仅通过使用自动装配来自动注入此依赖项

答案 2 :(得分：0)

像这样在主应用程序类中添加它

static void Main(string[] args)
{
    round();

    Console.ReadKey();
}

public static Dates GetNearestRecord(DateTime dateTime, IEnumerable<Dates> records)
{
    var nearestRecord = records.OrderBy(r => Math.Abs((r.Time - dateTime).TotalSeconds)).First();
    return new Dates() { ID = nearestRecord.ID, Value = nearestRecord.Value, Time = dateTime };
}
public static IEnumerable<DateTime> GenerateIntervals(DateTime from, DateTime to, TimeSpan interval)
{
    DateTime current = NearestInterval(from, interval);
    DateTime last = NearestInterval(to, interval);
    while (current <= last)
    {
        yield return current;
        current = current.Add(interval);
    }
}
public static DateTime NearestInterval(DateTime value, TimeSpan interval)
{
    var temp = value.Add(new TimeSpan(interval.Ticks / 2));
    var time = new TimeSpan((temp.TimeOfDay.Ticks / interval.Ticks) * interval.Ticks);

    return value.Date.Add(time);
}
private static void round()
{

    List<Dates> dates = Dates.GetDates();

    var first = dates.Min(r => r.Time);
    var last = dates.Max(r => r.Time);
    var interval = TimeSpan.FromMinutes(15);

    var intervals = GenerateIntervals(first, last, interval);
    var nearestRecords = intervals.Select(i => GetNearestRecord(i, dates));
}


public class Dates
{
    public int ID { get; set; }
    public double Value { get; set; }
    public DateTime Time { get; set; }

    public static List<Dates> GetDates()
    {
        string input =
            "| 1           | 31         | 2019-03-07 20:39:15 |\n" +
            "| 2           | 12         | 2019-03-07 20:54:16 |\n" +
            "| 5           | 33         | 2019-03-07 21:09:16 |\n" +
            "| 7           | 11         | 2019-03-07 21:24:17 |\n" +
            "| 8           | 9          | 2019-03-07 21:39:18 |\n" +
            "| 7           | 14         | 2019-03-07 21:54:18 |\n" +
            "| 8           | 15         | 2019-03-07 22:09:19 |\n" +
            "| 7           | 16         | 2019-03-07 22:24:19 |\n" +
            "| 8           | 31         | 2019-03-07 22:39:20 |\n" +
            "| 7           | 3          | 2019-03-07 22:54:20 |\n" +
            "| 8           | 34         | 2019-03-07 23:09:21 |\n" +
            "| 7           | 10         | 2019-03-07 23:24:20 |\n" +
            "| 8           | 17         | 2019-03-07 23:39:22 |\n" +
            "| 7           | 18         | 2019-03-07 23:54:23";

        List<Dates> dates = new List<Dates>();

        string line = "";
        StringReader reader = new StringReader(input);

        while ((line = reader.ReadLine()) != null)
        {
            string[] lineArray = line.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);

            Dates newDate = new Dates()
            {
                ID = int.Parse(lineArray[0]),
                Value = int.Parse(lineArray[1]),
                Time = DateTime.Parse(lineArray[2])
            };

            dates.Add(newDate);
        }
        return dates;
    }
}

答案 3 :(得分：0)

@Bean
public BCryptPasswordEncoder bCryptPasswordEncoder() {
    return new BCryptPasswordEncoder();
}

此代码适用于我

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