"personIds": [ "37835310f786451a8eb55d6c43b827cc" ],怎么定义这个报文，用java实现

这个报文是一个 JSON 格式的字符串，Java 中可以使用 JSON 库来生成这个报文。

以下是一个使用 Jackson 库生成该 JSON 报文的示例代码：

首先，定义一个 POJO 类来表示该 JSON 报文的结构：

public class Message {
    private List<String> personIds;

    public List<String> getPersonIds() {
        return personIds;
    }

    public void setPersonIds(List<String> personIds) {
        this.personIds = personIds;
    }
}

然后，使用 Jackson 库将该类的对象转化为 JSON 字符串：

ObjectMapper objectMapper = new ObjectMapper();
Message message = new Message();
message.setPersonIds(Arrays.asList("37835310f786451a8eb55d6c43b827cc"));
String jsonString = objectMapper.writeValueAsString(message);

其中，`message` 对象中的 `personIds` 属性保存了需要传输的数据。转化后，`jsonString` 就是包含该 JSON 数据的字符串。

相关问题

编写程序，实现图的字典嵌套表示，每个顶点用一个字典表示。如下图中。 点表示为：(0:{A:2:B-5,C43，其中表示一个顶点和该顶点相连的边及长度，要求输出整个图的顶点数 aum rertiees、 边的个数 Iumedees以及边的总长度 len ed s。

好的，我可以帮你编写这个程序。以下是代码：

graph = {
    0: {'A': 2, 'B': -5, 'C': 43},
    1: {'B': 8, 'D': 12},
    2: {'C': 5, 'D': 6},
    3: {'D': -4},
    4: {'A': 10, 'E': 3},
    5: {'D': 1, 'E': 7},
    6: {'E': -2}
}

# 计算顶点数和边的个数
num_vertices = len(graph)
num_edges = sum(len(v) for v in graph.values())

# 计算边的总长度
total_weight = sum(sum(v.values()) for v in graph.values() if v)

print("顶点数: ", num_vertices)
print("边的个数: ", num_edges)
print("边的总长度: ", total_weight)

在这个程序中，我们使用一个字典来表示图，其中每个顶点都用一个字典来表示它与相邻顶点之间的边及其权重。我们首先计算顶点数和边的个数，然后计算所有边的权重之和。最后，我们输出这些结果。

注意，由于这个程序是根据你提供的图来编写的，因此如果你的图不同于上述示例，请相应地更改字典中的值。

头信息示例如下vbf_version = 2.6; header { sw_part_number = "8895913857"; sw_version = "B"; sw_part_type = DATA; data_format_identifier = 0x00; ecu_address = 0x1012; erase = { { 0x00B60000, 0x00010000 }, { 0x40200300, 0x00000D00 } }; verification_block_start = 0x40200300; verification_block_length = 0x0000002C; verification_block_root_hash = 0x3AB70E8A9C521B370E37D6FF03263770426297167C495C80C8AF3EA0B9AC3C7C; file_checksum = 0xEDB03AFF; sw_signature_dev = 0x7B3E3A02DBBC87DCC7BB9BFD795C7D1355C82DCA947BA5225B5BC549F4FF1648C3DC78C7947DF7F751A856351FBF340CB9F9E5B0790F026DC080800EA8A7AE6383DF63A0C8447ADB921A29A6FD2B84BA83D4769301FDBD3B019442A8FC588864F299D546587019E7700C345899F4CBEA7E5F831132DDC563C589DDD64F5A842129B803BC4C324310918162BC01E6312374A370A39F201F425B4DB457F8BA829A459BD5ED9E1673D9BD923D5E1287AAB45AC3B8999FC96CA514CB5EFBEBD5B23FDBF8AC944C376F44153B2C7F3B415AB87D274A4BD2DD120B70DA67721062F03125FA9D162C10855CD4F59A43253D0421A8D7AE851188E9D0EB1BAB13DE308012; sw_signature = 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}, 请用c写代码 把头信息都解析出来

以下是用C语言解析头信息的示例代码：

#include <stdio.h>
#include <stdint.h>

#define MAX_ERASE_REGIONS 10

typedef struct {
    uint32_t start_address;
    uint32_t length;
} erase_region_t;

typedef struct {
    char sw_part_number[32];
    char sw_version;
    char sw_part_type[8];
    uint8_t data_format_identifier;
    uint16_t ecu_address;
    erase_region_t erase_regions[MAX_ERASE_REGIONS];
    uint32_t verification_block_start;
    uint32_t verification_block_length;
    uint8_t verification_block_root_hash[32];
    uint32_t file_checksum;
    uint8_t sw_signature_dev[128];
    uint8_t sw_signature[128];
} header_t;

int main() {
    // 头信息示例字符串
    char header_str[] = "vbf_version = 2.6; header { sw_part_number = \"8895913857\"; sw_version = \"B\"; sw_part_type = DATA; data_format_identifier = 0x00; ecu_address = 0x1012; erase = { { 0x00B60000, 0x00010000 }, { 0x40200300, 0x00000D00 } }; verification_block_start = 0x40200300; verification_block_length = 0x0000002C; verification_block_root_hash = 0x3AB70E8A9C521B370E37D6FF03263770426297167C495C80C8AF3EA0B9AC3C7C; file_checksum = 0xEDB03AFF; sw_signature_dev = 0x7B3E3A02DBBC87DCC7BB9BFD795C7D1355C82DCA947BA5225B5BC549F4FF1648C3DC78C7947DF7F751A856351FBF340CB9F9E5B0790F026DC080800EA8A7AE6383DF63A0C8447ADB921A29A6FD2B84BA83D4769301FDBD3B019442A8FC588864F299D546587019E7700C345899F4CBEA7E5F831132DDC563C589DDD64F5A842129B803BC4C324310918162BC01E6312374A370A39F201F425B4DB457F8BA829A459BD5ED9E1673D9BD923D5E1287AAB45AC3B8999FC96CA514CB5EFBEBD5B23FDBF8AC944C376F44153B2C7F3B415AB87D274A4BD2DD120B70DA67721062F03125FA9D162C10855CD4F59A43253D0421A8D7AE851188E9D0EB1BAB13DE308012; sw_signature = 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}";

    // 将头信息解析到结构体中
    header_t header = {0};
    sscanf(header_str, "vbf_version = %*f; header { sw_part_number = \"%[^\"]\"; sw_version = \"%c\"; sw_part_type = %s; data_format_identifier = %hhx; ecu_address = %hx; erase = { %*[{ ]{ 0x%x , 0x%x }%*[ }],%*[{ ]{ 0x%x , 0x%x }%*[ }] }; verification_block_start = %x; verification_block_length = %x; verification_block_root_hash = 0x%32hhx; file_checksum = 0x%x; sw_signature_dev = 0x%256hhx; sw_signature = 0x%256hhx; }",
           header.sw_part_number,
           &header.sw_version,
           header.sw_part_type,
           &header.data_format_identifier,
           &header.ecu_address,
           &header.erase_regions[0].start_address,
           &header.erase_regions[0].length,
           &header.erase_regions[1].start_address,
           &header.erase_regions[1].length,
           &header.verification_block_start,
           &header.verification_block_length,
           header.verification_block_root_hash,
           &header.file_checksum,
           header.sw_signature_dev,
           header.sw_signature);

    // 输出解析结果
    printf("sw_part_number = %s\n", header.sw_part_number);
    printf("sw_version = %c\n", header.sw_version);
    printf("sw_part_type = %s\n", header.sw_part_type);
    printf("data_format_identifier = 0x%02x\n", header.data_format_identifier);
    printf("ecu_address = 0x%04x\n", header.ecu_address);
    printf("erase_regions:\n");
    for (int i = 0; i < MAX_ERASE_REGIONS; i++) {
        if (header.erase_regions[i].length == 0) {
            break;
        }
        printf("  [%d] start_address = 0x%08x, length = 0x%08x\n", i, header.erase_regions[i].start_address, header.erase_regions[i].length);
    }
    printf("verification_block_start = 0x%08x\n", header.verification_block_start);
    printf("verification_block_length = 0x%08x\n", header.verification_block_length);
    printf("verification_block_root_hash = ");
    for (int i = 0; i < 32; i++) {
        printf("%02x", header.verification_block_root_hash[i]);
    }
    printf("\n");
    printf("file_checksum = 0x%08x\n", header.file_checksum);
    printf("sw_signature_dev = ");
    for (int i = 0; i < 128; i++) {
        printf("%02x", header.sw_signature_dev[i]);
    }
    printf("\n");
    printf("sw_signature = ");
    for (int i = 0; i < 128; i++) {
        printf("%02x", header.sw_signature[i]);
    }
    printf("\n");

    return 0;
}

该代码将头信息解析到一个结构体中，然后逐一输出解析结果。注意，该代码仅适用于给定的头信息示例字符串，如果头信息的格式有所变化，可能需要相应地修改代码。